can you help me I've always been bad at this

Given that
[tex]\frac{3}{2}\colon\frac{1}{4}[/tex]Then we would have to write it as a quotient and the result would be in a scale 1, let's see what we get:
[tex]\begin{gathered} \frac{3}{2}\colon\frac{1}{4} \\ \Rightarrow\frac{\frac{3}{2}}{\frac{1}{4}}=\frac{3\cdot4}{2\cdot1}=\frac{12}{2}=6 \end{gathered}[/tex]Therefore, the unit rate is 6:1