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Finding the Fourth Proportional to 3,659.67, 5,490.45 and 1,469.88

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Solution

The fourth proportional to 3,659.67, 5,490.45 and 1,469.88 is: 2,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,659.67 : 5,490.45 = 1,469.88 : x
  2. Step 2: Convert to fraction form
    3,659.67/5,490.45 = 1,469.88/x
  3. Step 3: Cross multiply
    3,659.67x = 5,490.45 × 1,469.88
  4. Step 4: Simplify right side
    3,659.67x = 8,070,302.65
  5. Step 5: Solve for x
    x = 8,070,302.65/3,659.67
  6. Step 6: Final answer
    x = 2,205.20

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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.