Home / 3,930-5,355

Finding the Third Proportional to 3,930 and 5,355

Calculator

Solution

The third proportional to 3,930 and 5,355 is: 7,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930 : 5,355 = 5,355 : x
  2. Step 2: Convert to fraction form
    3,930/5,355 = 5,355/x
  3. Step 3: Cross multiply
    3,930x = 5,355 × 5,355
  4. Step 4: Simplify right side
    3,930x = 28,676,025
  5. Step 5: Solve for x
    x = 28,676,025/3,930
  6. Step 6: Final answer
    x = 7,296.70

Related Problems

Find third proportional to 1,965 and 2,677.50
Half scale
Find third proportional to 7,860 and 10,710
Double scale
Find third proportional to 3,932 and 5,358
Similar ratio
Find third proportional to 5,895 and 8,032.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.