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Finding the Fourth Proportional to 8,906.78, 13,363.26 and 3,361.72

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Solution

The fourth proportional to 8,906.78, 13,363.26 and 3,361.72 is: 5,043.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.78 : 13,363.26 = 3,361.72 : x
  2. Step 2: Convert to fraction form
    8,906.78/13,363.26 = 3,361.72/x
  3. Step 3: Cross multiply
    8,906.78x = 13,363.26 × 3,361.72
  4. Step 4: Simplify right side
    8,906.78x = 44,923,505.00
  5. Step 5: Solve for x
    x = 44,923,505.00/8,906.78
  6. Step 6: Final answer
    x = 5,043.75

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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.