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Finding the Fourth Proportional to 3,679.66, 5,520.52 and 1,489.92

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Solution

The fourth proportional to 3,679.66, 5,520.52 and 1,489.92 is: 2,235.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.66 : 5,520.52 = 1,489.92 : x
  2. Step 2: Convert to fraction form
    3,679.66/5,520.52 = 1,489.92/x
  3. Step 3: Cross multiply
    3,679.66x = 5,520.52 × 1,489.92
  4. Step 4: Simplify right side
    3,679.66x = 8,225,133.16
  5. Step 5: Solve for x
    x = 8,225,133.16/3,679.66
  6. Step 6: Final answer
    x = 2,235.30

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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.