Home / 6,687.38-9,229.61-4,169.90

Finding the Fourth Proportional to 6,687.38, 9,229.61 and 4,169.90

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Solution

The fourth proportional to 6,687.38, 9,229.61 and 4,169.90 is: 5,755.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,687.38 : 9,229.61 = 4,169.90 : x
  2. Step 2: Convert to fraction form
    6,687.38/9,229.61 = 4,169.90/x
  3. Step 3: Cross multiply
    6,687.38x = 9,229.61 × 4,169.90
  4. Step 4: Simplify right side
    6,687.38x = 38,486,550.74
  5. Step 5: Solve for x
    x = 38,486,550.74/6,687.38
  6. Step 6: Final answer
    x = 5,755.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.