Verified Answer :

iGreen

You cross multiply and solve for the unknown variable.

Here's an example:

\(\sf\dfrac{2}{3}=\dfrac{6}{x}\)

Cross multiply:

\(\sf3\times6=2\times~x\)

\(\sf18=2x\)

Divide 2 to both sides:

\(\sf~x=9\)

siahsavage

One way is to cross multiply and then solve from there.
Example:

10/x = 2/5
(105 = 2x)
50 = 2x
(50/2)
25 = x

10/25 = 2/5

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