Answer
$3$
Work Step by Step
We are given:
$\dfrac{x}{8}=\dfrac{18}{48}$
To solve the proportion, we cross multiply:
Set the product of the means equal to the product of the extremes and solve for x as follows,
$$
48x=8\cdot 18\Longrightarrow x=\frac{8\cdot 18}{48}=3
.$$
