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Finding the Fourth Proportional to 8,266.62, 12,399.78 and 3,880.96

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Solution

The fourth proportional to 8,266.62, 12,399.78 and 3,880.96 is: 5,821.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.62 : 12,399.78 = 3,880.96 : x
  2. Step 2: Convert to fraction form
    8,266.62/12,399.78 = 3,880.96/x
  3. Step 3: Cross multiply
    8,266.62x = 12,399.78 × 3,880.96
  4. Step 4: Simplify right side
    8,266.62x = 48,123,050.19
  5. Step 5: Solve for x
    x = 48,123,050.19/8,266.62
  6. Step 6: Final answer
    x = 5,821.37

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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.