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Finding the Fourth Proportional to 5,390.70, 8,073.06 and 3,654.06

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Solution

The fourth proportional to 5,390.70, 8,073.06 and 3,654.06 is: 5,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.70 : 8,073.06 = 3,654.06 : x
  2. Step 2: Convert to fraction form
    5,390.70/8,073.06 = 3,654.06/x
  3. Step 3: Cross multiply
    5,390.70x = 8,073.06 × 3,654.06
  4. Step 4: Simplify right side
    5,390.70x = 29,499,445.62
  5. Step 5: Solve for x
    x = 29,499,445.62/5,390.70
  6. Step 6: Final answer
    x = 5,472.28

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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.