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Finding the Fourth Proportional to 8,917.98, 13,376.52 and 4,234.56

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Solution

The fourth proportional to 8,917.98, 13,376.52 and 4,234.56 is: 6,351.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.98 : 13,376.52 = 4,234.56 : x
  2. Step 2: Convert to fraction form
    8,917.98/13,376.52 = 4,234.56/x
  3. Step 3: Cross multiply
    8,917.98x = 13,376.52 × 4,234.56
  4. Step 4: Simplify right side
    8,917.98x = 56,643,676.53
  5. Step 5: Solve for x
    x = 56,643,676.53/8,917.98
  6. Step 6: Final answer
    x = 6,351.63

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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.