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Finding the Fourth Proportional to 9,073.70, 13,607.81 and 3,149.21

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Solution

The fourth proportional to 9,073.70, 13,607.81 and 3,149.21 is: 4,722.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,073.70 : 13,607.81 = 3,149.21 : x
  2. Step 2: Convert to fraction form
    9,073.70/13,607.81 = 3,149.21/x
  3. Step 3: Cross multiply
    9,073.70x = 13,607.81 × 3,149.21
  4. Step 4: Simplify right side
    9,073.70x = 42,853,767.55
  5. Step 5: Solve for x
    x = 42,853,767.55/9,073.70
  6. Step 6: Final answer
    x = 4,722.86

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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.