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Finding the Fourth Proportional to 4,490.88, 6,732.18 and 4,121.88

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Solution

The fourth proportional to 4,490.88, 6,732.18 and 4,121.88 is: 6,179.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,490.88 : 6,732.18 = 4,121.88 : x
  2. Step 2: Convert to fraction form
    4,490.88/6,732.18 = 4,121.88/x
  3. Step 3: Cross multiply
    4,490.88x = 6,732.18 × 4,121.88
  4. Step 4: Simplify right side
    4,490.88x = 27,749,238.10
  5. Step 5: Solve for x
    x = 27,749,238.10/4,490.88
  6. Step 6: Final answer
    x = 6,179.02

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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.