Need help finding an equation (can't give more info: I'm patenting this)

[irishdoc6650]

If I know the measurements for A, B, and C. How do I determine the distance of travel of D?

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[Deleted member 4993]

If I know the measurements for A, B, and C. How do I determine the distance of travel of D?

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A / C = B / D ......... Why?


What are your thoughts?

Please share your work with us ...even if you know it is wrong

If you are stuck at the beginning tell us and we'll start with the definitions.

You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...Before-Posting

 

[irishdoc6650]

I'm designing a mechanical item for a vehicle where there is limited space for the movement om D.

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[stapel]

I'm designing a mechanical item for a vehicle where there is limited space for the movement om D.

So these are ("some"? "all"?) moving parts of some physical object, rather than a rectangular figure from a geometry homework exercise? If so, then please reply with all of the information, including a clear statement of your efforts so far. Thank you!

 

[irishdoc6650]

No its not a homework problem. I have given all the information needed for someone to help with the equation I need. If not, I can look elsewhere as I don't want to give more information on an item I will be patenting.

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[Deleted member 4993]

No its not a homework problem. I have given all the information needed for someone to help with the equation I need. If not, I can look elsewhere as I don't want to give more information on an item I will be patenting.

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Great! You GOT all the help you need - read the responses carefully!

Next time, for this type of commercial venture - hire a professional under confidentiality agreement. Do not try to get a free-ride - where solving your problem will not help the students coming in here.

 

[irishdoc6650]

"Free ride"? I must have miss understood the name of the forum, how about changing it to students only free math help. Secondly, if a student is looking for the movement of a lever my question would help them.

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[mmm4444bot]

Do you know how to solve the equation posted? When two fractions are equal, the equation is called a proportion (if one or more values change, the remaining values must change proportionately -- that is, in ratio or relative to one another -- to maintain equality between the fractions). The equation comes from picturing A, B, C and D as sides in two similar triangles.

\(\displaystyle \dfrac{A}{C} = \dfrac{B}{D}\)

If you know three out of four values, you can find the other by multiplying (two numbers) on the diagonal and dividing by the number not used. :cool: