When movies are being created, the set designers often use miniature models before they create the actual movie set. The set designers for Jurassic Park 3, created a 6 inch high and 4 inch long model dinosaur that represented a 20 feet long dinosaur on the set. How high was the actual dinosaur?

I used to know how to do this but I forgot :/ I'm pretty sure I need to multiply things but I'm not exactly sure what to do. I just need someone to point me in the right direction and I can do the rest. Thank you.

Question

When movies are being created, the set designers often use miniature models before they create the actual movie set. The set designers for Jurassic Park 3, created a 6 inch high and 4 inch long model dinosaur that represented a 20 feet long dinosaur on the set. How high was the actual dinosaur?

I used to know how to do this but I forgot :/ I'm pretty sure I need to multiply things but I'm not exactly sure what to do. I just need someone to point me in the right direction and I can do the rest. Thank you.

anonymous · Answer

Do I need to multiply the 4 6 and 20 together? or do I divide? I haven't got a clue.

anonymous · Answer

Okay so to set up the ratio I would write: 

4:6:20

That is all I know..

anonymous · Answer

Well, convert everything into feet first.

anonymous · Answer

Do you have the answer and is it 30?

anonymous · Answer

I have an option for 30 feet. How do I convert those into feet? Do I square each number?

anonymous · Answer

Don't. It's not required ( I just realised). 

The ratio of the lengths is 20/4 = 5. 

So you multiply the height by a factor of 5 to get the right answer. Which is 30.

anonymous · Answer

Ohh okay! Looking at what you just wrote makes so much sense. Thank you so much for your help! :)