To find a ratio equivalent to a given ratio where the second quantity is 1, you can simplify the ratio by dividing both quantities by the second quantity.
For example, if you have a ratio \( a:b \), and you want to find an equivalent ratio with the second quantity as 1, divide both quantities by \( b \):
\[ \frac{a}{b} : \frac{b}{b} \implies \frac{a}{b} : 1 \]
This results in the equivalent ratio \( \frac{a}{b} : 1 \).
If you provide a specific ratio, I can help you with that particular ratio.