To solve the equation \( 8.5 = \frac{x}{4} \), you can start by isolating \( x \). To do this, multiply both sides of the equation by 4:
\[ 8.5 \times 4 = x \]
Now, calculate \( 8.5 \times 4 \):
\[ 8.5 \times 4 = 34 \]
Thus, \( x = 34 \).
The value of \( x \) is \( 34 \).