Home / 7,129.17-10,694.68-2,747.88

Finding the Fourth Proportional to 7,129.17, 10,694.68 and 2,747.88

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Solution

The fourth proportional to 7,129.17, 10,694.68 and 2,747.88 is: 4,122.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.17 : 10,694.68 = 2,747.88 : x
  2. Step 2: Convert to fraction form
    7,129.17/10,694.68 = 2,747.88/x
  3. Step 3: Cross multiply
    7,129.17x = 10,694.68 × 2,747.88
  4. Step 4: Simplify right side
    7,129.17x = 29,387,690.41
  5. Step 5: Solve for x
    x = 29,387,690.41/7,129.17
  6. Step 6: Final answer
    x = 4,122.18

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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.