Linda is trying to construct a mobile. The mobile is made of similar triangles. She knows the dimensions of triangles ABC and triangle DEF, but she does not know all the dimensions of triangle GHI. What are the rest of the dimensions (in inches) based on triangle ABC?
3 in, 4 in
Insufficient information
4 in, 5 in
3 in, 4 1/2 in
None of the above.

I want to say it's 3 in, 4 1/2 because of the way the numbers are going but if I'm wrong, would someone explain how to do this properly? Thank you.

Question

Linda is trying to construct a mobile. The mobile is made of similar triangles. She knows the dimensions of triangles ABC and triangle DEF, but she does not know all the dimensions of triangle GHI. What are the rest of the dimensions (in inches) based on triangle ABC?
3 in, 4 in
Insufficient information
4 in, 5 in
3 in, 4 1/2 in
None of the above.

I want to say it's 3 in, 4 1/2 because of the way the numbers are going but if I'm wrong, would someone explain how to do this properly? Thank you.