Home / 3,540-7,779

Finding the Third Proportional to 3,540 and 7,779

Calculator

Solution

The third proportional to 3,540 and 7,779 is: 17,094.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540 : 7,779 = 7,779 : x
  2. Step 2: Convert to fraction form
    3,540/7,779 = 7,779/x
  3. Step 3: Cross multiply
    3,540x = 7,779 × 7,779
  4. Step 4: Simplify right side
    3,540x = 60,512,841
  5. Step 5: Solve for x
    x = 60,512,841/3,540
  6. Step 6: Final answer
    x = 17,094.02

Related Problems

Find third proportional to 1,770 and 3,889.50
Half scale
Find third proportional to 7,080 and 15,558
Double scale
Find third proportional to 3,542 and 7,783
Similar ratio
Find third proportional to 5,310 and 11,668.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.