Home / 7,127.10-10,691.55-2,747.61

Finding the Fourth Proportional to 7,127.10, 10,691.55 and 2,747.61

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Solution

The fourth proportional to 7,127.10, 10,691.55 and 2,747.61 is: 4,121.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.10 : 10,691.55 = 2,747.61 : x
  2. Step 2: Convert to fraction form
    7,127.10/10,691.55 = 2,747.61/x
  3. Step 3: Cross multiply
    7,127.10x = 10,691.55 × 2,747.61
  4. Step 4: Simplify right side
    7,127.10x = 29,376,209.70
  5. Step 5: Solve for x
    x = 29,376,209.70/7,127.10
  6. Step 6: Final answer
    x = 4,121.76

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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.