ANSWER
Yes, they form a proportion
Step-by-step explanation
A proportion is a statement that two ratios are equal.
We have to check if the next equality is true:
![(4)/(11)=(10)/(27.5)](https://img.qammunity.org/2023/formulas/mathematics/college/nn8ama1qq82druzpidf8sebui2zwuestr1.png)
Instead of doing the divisions, we can do multiplications:
![\begin{gathered} 4*27.5=10*11 \\ 110=110\text{ }\rightarrow\text{ true} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/qdt6dei3l4bbsd1r3rk6c938yklllx70ak.png)
These ratios are equal, so they form a proportion