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Finding the Fourth Proportional to 3,601.49, 5,398.22 and 1,520.87

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Solution

The fourth proportional to 3,601.49, 5,398.22 and 1,520.87 is: 2,279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,601.49 : 5,398.22 = 1,520.87 : x
  2. Step 2: Convert to fraction form
    3,601.49/5,398.22 = 1,520.87/x
  3. Step 3: Cross multiply
    3,601.49x = 5,398.22 × 1,520.87
  4. Step 4: Simplify right side
    3,601.49x = 8,209,990.85
  5. Step 5: Solve for x
    x = 8,209,990.85/3,601.49
  6. Step 6: Final answer
    x = 2,279.61

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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.