4. $\frac{3}{8}=\frac{s - 2}{24}$

Explanation:

Step1: Cross - multiply

$3\times24 = 8\times(s - 2)$

Step2: Calculate the left - hand side

$72=8\times(s - 2)$

Step3: Divide both sides by 8

$\frac{72}{8}=s - 2$ $9=s - 2$

Step4: Solve for s

$s=9 + 2$

Answer:

$s = 11$