Find the unknown number in the proportion. Round answer to the nearest thousandths when necessary.

Question

one half
​= StartFraction x Over 11 EndFraction

Answer 1

To solve the proportion \( \frac{1}{2} = \frac{x}{11} \), you can cross-multiply:

\[ 1 \cdot 11 = 2 \cdot x \]

This simplifies to:

\[ 11 = 2x \]

To isolate \( x \), divide both sides by 2:

\[ x = \frac{11}{2} \]

Now calculate \( \frac{11}{2} \):

\[ x = 5.5 \]

Thus, the unknown number \( x \) is \( 5.500 \) when rounded to the nearest thousandth.