Home / 6,439-7,402

Finding the Third Proportional to 6,439 and 7,402

Calculator

Solution

The third proportional to 6,439 and 7,402 is: 8,509.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439 : 7,402 = 7,402 : x
  2. Step 2: Convert to fraction form
    6,439/7,402 = 7,402/x
  3. Step 3: Cross multiply
    6,439x = 7,402 × 7,402
  4. Step 4: Simplify right side
    6,439x = 54,789,604
  5. Step 5: Solve for x
    x = 54,789,604/6,439
  6. Step 6: Final answer
    x = 8,509.02

Related Problems

Find third proportional to 3,219.50 and 3,701
Half scale
Find third proportional to 12,878 and 14,804
Double scale
Find third proportional to 6,441 and 7,404
Similar ratio
Find third proportional to 9,658.50 and 11,103
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.