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Finding the Fourth Proportional to 8,815.73, 13,222.94 and 4,136.79

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Solution

The fourth proportional to 8,815.73, 13,222.94 and 4,136.79 is: 6,204.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.73 : 13,222.94 = 4,136.79 : x
  2. Step 2: Convert to fraction form
    8,815.73/13,222.94 = 4,136.79/x
  3. Step 3: Cross multiply
    8,815.73x = 13,222.94 × 4,136.79
  4. Step 4: Simplify right side
    8,815.73x = 54,700,505.28
  5. Step 5: Solve for x
    x = 54,700,505.28/8,815.73
  6. Step 6: Final answer
    x = 6,204.88

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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.