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Finding the Fourth Proportional to 2,291.76, 3,437.88 and 731.88

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Solution

The fourth proportional to 2,291.76, 3,437.88 and 731.88 is: 1,097.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.76 : 3,437.88 = 731.88 : x
  2. Step 2: Convert to fraction form
    2,291.76/3,437.88 = 731.88/x
  3. Step 3: Cross multiply
    2,291.76x = 3,437.88 × 731.88
  4. Step 4: Simplify right side
    2,291.76x = 2,516,115.61
  5. Step 5: Solve for x
    x = 2,516,115.61/2,291.76
  6. Step 6: Final answer
    x = 1,097.90

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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.