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Finding the Fourth Proportional to 8,806.62, 13,212 and 3,876.66

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Solution

The fourth proportional to 8,806.62, 13,212 and 3,876.66 is: 5,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.62 : 13,212 = 3,876.66 : x
  2. Step 2: Convert to fraction form
    8,806.62/13,212 = 3,876.66/x
  3. Step 3: Cross multiply
    8,806.62x = 13,212 × 3,876.66
  4. Step 4: Simplify right side
    8,806.62x = 51,218,431.92
  5. Step 5: Solve for x
    x = 51,218,431.92/8,806.62
  6. Step 6: Final answer
    x = 5,815.90

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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.