The two similar rectangular pyramids shown below have a scale factor of 5:4. Determine the perimeter, in inches, of the smaller pyramid's base.

Question

anonymous · Answer

attachment

anonymous · Answer

i have no idea how to do this so any help that could be given would be great :)

anonymous · Answer

@acxbox22

anonymous · Answer

@FlashBT3

acxbox22 · Answer

use proportions to find the two sides given the ratio and the sides of the bigger rectangle  then find perimeter

anonymous · Answer

Sorry I honestly don't know either. I probably could find it out, just can't think of it right now.

anonymous · Answer

its okay @FlashBT3 

so the porportion would be $$\frac{ 6.8 }{ 3.1 } = \frac{ 5 }{ 4 }$$

anonymous · Answer

proportion *

anonymous · Answer

that's what I'm thinking

anonymous · Answer

and if that's the proportion i got $$\frac{ 15.5 }{ 23.2 }$$

acxbox22 · Answer

no...that wont help us solve for anything|dw:1430355891033:dw|this will