Question

3 what is the missing number that makes the fractions equal?
$\frac{3}{9}=\frac{12}{x}$
4
3
36
12

Explanation:

Step1: Cross - multiply fractions

$3x = 12\times9$

Step2: Calculate right - hand side

$3x=108$

Step3: Solve for x

$x=\frac{108}{3}=36$

Answer:

36