Home / 6,712-7,720

Finding the Third Proportional to 6,712 and 7,720

Calculator

Solution

The third proportional to 6,712 and 7,720 is: 8,879.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,712 : 7,720 = 7,720 : x
  2. Step 2: Convert to fraction form
    6,712/7,720 = 7,720/x
  3. Step 3: Cross multiply
    6,712x = 7,720 × 7,720
  4. Step 4: Simplify right side
    6,712x = 59,598,400
  5. Step 5: Solve for x
    x = 59,598,400/6,712
  6. Step 6: Final answer
    x = 8,879.38

Related Problems

Find third proportional to 3,356 and 3,860
Half scale
Find third proportional to 13,424 and 15,440
Double scale
Find third proportional to 6,714 and 7,722
Similar ratio
Find third proportional to 10,068 and 11,580
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.