To calculate the 3/4% of 387, you have to use cross multiplication:
The fraction 3/4 can be expressed as a decimal value to make the calculations easier: 3/4=0.75
100% is 387
0.75% is x
Both relations are at the same ratio, so that
![\begin{gathered} (387)/(100)=(x)/(0.75) \\ x=(387)/(100)\cdot0.75 \\ x=2.9025 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/v289mhld5i6jtif6t5h5yqln60jnxttcy6.png)
This means that the 3/4% of 387 is 2.9025