#### Answer

1.5 inches

#### Work Step by Step

As these two pairs are similar, we can turn their lengths into proportions and set them equal to each other.
$\frac{2}{4}$ = $\frac{x}{3}$
To solve for x, we can now cross multiply:
4x = 2 x 3
4x = 6
x = (6 $\div$ 4)
x = $\frac{6}{4}$ = $\frac{3}{2}$ = 1.5