Home / 10,780.66-16,172.49-3,385.70

Finding the Fourth Proportional to 10,780.66, 16,172.49 and 3,385.70

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Solution

The fourth proportional to 10,780.66, 16,172.49 and 3,385.70 is: 5,079.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.66 : 16,172.49 = 3,385.70 : x
  2. Step 2: Convert to fraction form
    10,780.66/16,172.49 = 3,385.70/x
  3. Step 3: Cross multiply
    10,780.66x = 16,172.49 × 3,385.70
  4. Step 4: Simplify right side
    10,780.66x = 54,755,191.87
  5. Step 5: Solve for x
    x = 54,755,191.87/10,780.66
  6. Step 6: Final answer
    x = 5,079.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.