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Finding the Fourth Proportional to 8,812, 13,207.20 and 5,299.84

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Solution

The fourth proportional to 8,812, 13,207.20 and 5,299.84 is: 7,943.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812 : 13,207.20 = 5,299.84 : x
  2. Step 2: Convert to fraction form
    8,812/13,207.20 = 5,299.84/x
  3. Step 3: Cross multiply
    8,812x = 13,207.20 × 5,299.84
  4. Step 4: Simplify right side
    8,812x = 69,996,046.85
  5. Step 5: Solve for x
    x = 69,996,046.85/8,812
  6. Step 6: Final answer
    x = 7,943.26

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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.