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Finding the Fourth Proportional to 3,747.88, 5,620.74 and 1,151.02

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Solution

The fourth proportional to 3,747.88, 5,620.74 and 1,151.02 is: 1,726.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.88 : 5,620.74 = 1,151.02 : x
  2. Step 2: Convert to fraction form
    3,747.88/5,620.74 = 1,151.02/x
  3. Step 3: Cross multiply
    3,747.88x = 5,620.74 × 1,151.02
  4. Step 4: Simplify right side
    3,747.88x = 6,469,584.15
  5. Step 5: Solve for x
    x = 6,469,584.15/3,747.88
  6. Step 6: Final answer
    x = 1,726.20

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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.