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Finding the Fourth Proportional to 8,857.20, 13,294 and 4,477.73

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Solution

The fourth proportional to 8,857.20, 13,294 and 4,477.73 is: 6,720.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.20 : 13,294 = 4,477.73 : x
  2. Step 2: Convert to fraction form
    8,857.20/13,294 = 4,477.73/x
  3. Step 3: Cross multiply
    8,857.20x = 13,294 × 4,477.73
  4. Step 4: Simplify right side
    8,857.20x = 59,526,942.62
  5. Step 5: Solve for x
    x = 59,526,942.62/8,857.20
  6. Step 6: Final answer
    x = 6,720.74

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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.