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Finding the Fourth Proportional to 3,709.97, 5,564.95 and 1,489.82

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Solution

The fourth proportional to 3,709.97, 5,564.95 and 1,489.82 is: 2,234.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.97 : 5,564.95 = 1,489.82 : x
  2. Step 2: Convert to fraction form
    3,709.97/5,564.95 = 1,489.82/x
  3. Step 3: Cross multiply
    3,709.97x = 5,564.95 × 1,489.82
  4. Step 4: Simplify right side
    3,709.97x = 8,290,742.26
  5. Step 5: Solve for x
    x = 8,290,742.26/3,709.97
  6. Step 6: Final answer
    x = 2,234.72

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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.