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Finding the Fourth Proportional to 3,572.57, 5,353.90 and 2,789.03

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Solution

The fourth proportional to 3,572.57, 5,353.90 and 2,789.03 is: 4,179.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.57 : 5,353.90 = 2,789.03 : x
  2. Step 2: Convert to fraction form
    3,572.57/5,353.90 = 2,789.03/x
  3. Step 3: Cross multiply
    3,572.57x = 5,353.90 × 2,789.03
  4. Step 4: Simplify right side
    3,572.57x = 14,932,194.13
  5. Step 5: Solve for x
    x = 14,932,194.13/3,572.57
  6. Step 6: Final answer
    x = 4,179.68

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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.