To determine if \( w = 12 \) is a solution to the equation \( 1 = \frac{3}{w} \), we can substitute \( w \) with 12.
Substituting \( w \) into the equation:
\[ 1 = \frac{3}{12} \]
Now, simplify the right side:
\[ \frac{3}{12} = \frac{1}{4} \]
So, the equation becomes:
\[ 1 = \frac{1}{4} \]
This statement is not true, so \( w = 12 \) is not a solution to the equation. The answer is no.