Answer
x = 30
Explanation
We need to find the value of x in the proportion
[tex]\begin{gathered} \frac{4}{4}=\frac{x}{30} \\ \text{Cross multiply} \\ 4x=120 \\ \text{Divide both sides by 4} \\ \frac{4x}{4}=\frac{120}{4} \\ x=30 \end{gathered}[/tex]Hope this Helps!!!