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Finding the Fourth Proportional to 8,900.78, 13,354.25 and 3,355.71

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Solution

The fourth proportional to 8,900.78, 13,354.25 and 3,355.71 is: 5,034.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900.78 : 13,354.25 = 3,355.71 : x
  2. Step 2: Convert to fraction form
    8,900.78/13,354.25 = 3,355.71/x
  3. Step 3: Cross multiply
    8,900.78x = 13,354.25 × 3,355.71
  4. Step 4: Simplify right side
    8,900.78x = 44,813,017.40
  5. Step 5: Solve for x
    x = 44,813,017.40/8,900.78
  6. Step 6: Final answer
    x = 5,034.73

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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.