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Finding the Fourth Proportional to 3,488.74, 5,229.87 and 1,539.88

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Solution

The fourth proportional to 3,488.74, 5,229.87 and 1,539.88 is: 2,308.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.74 : 5,229.87 = 1,539.88 : x
  2. Step 2: Convert to fraction form
    3,488.74/5,229.87 = 1,539.88/x
  3. Step 3: Cross multiply
    3,488.74x = 5,229.87 × 1,539.88
  4. Step 4: Simplify right side
    3,488.74x = 8,053,372.22
  5. Step 5: Solve for x
    x = 8,053,372.22/3,488.74
  6. Step 6: Final answer
    x = 2,308.39

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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.