Question

Find the missing number in the proportion.
3/8 = x/24

Answer 1

\[\frac{3}{8}=\frac{x}{24}\iff x=\frac{3\times 24}{8}\]

Answer 2

cancel first, multiply last

Answer 3

Again, cross-multiply, you get 8x = 72.

Divide both sides by 8, you get x = 9.