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Finding the Fourth Proportional to 8,491.84, 12,737.45 and 2,251.87

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Solution

The fourth proportional to 8,491.84, 12,737.45 and 2,251.87 is: 3,377.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.84 : 12,737.45 = 2,251.87 : x
  2. Step 2: Convert to fraction form
    8,491.84/12,737.45 = 2,251.87/x
  3. Step 3: Cross multiply
    8,491.84x = 12,737.45 × 2,251.87
  4. Step 4: Simplify right side
    8,491.84x = 28,683,055.32
  5. Step 5: Solve for x
    x = 28,683,055.32/8,491.84
  6. Step 6: Final answer
    x = 3,377.72

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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.