Find the 4th proportional to 42, 12, 7
Share
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
42:12::7:x
42*x=12*7
x=12*7/42
x=2
let the 4th proportional be x
•°• 42:12::7:x
42/12= 7/x => x= 12*7/42 => x= 2