Home / 6,660-8,040

Finding the Third Proportional to 6,660 and 8,040

Calculator

Solution

The third proportional to 6,660 and 8,040 is: 9,705.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660 : 8,040 = 8,040 : x
  2. Step 2: Convert to fraction form
    6,660/8,040 = 8,040/x
  3. Step 3: Cross multiply
    6,660x = 8,040 × 8,040
  4. Step 4: Simplify right side
    6,660x = 64,641,600
  5. Step 5: Solve for x
    x = 64,641,600/6,660
  6. Step 6: Final answer
    x = 9,705.95

Related Problems

Find third proportional to 3,330 and 4,020
Half scale
Find third proportional to 13,320 and 16,080
Double scale
Find third proportional to 6,662 and 8,042
Similar ratio
Find third proportional to 9,990 and 12,060
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.