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Finding the Fourth Proportional to 8,893.56, 12,272.40 and 4,913.92

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Solution

The fourth proportional to 8,893.56, 12,272.40 and 4,913.92 is: 6,780.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,893.56 : 12,272.40 = 4,913.92 : x
  2. Step 2: Convert to fraction form
    8,893.56/12,272.40 = 4,913.92/x
  3. Step 3: Cross multiply
    8,893.56x = 12,272.40 × 4,913.92
  4. Step 4: Simplify right side
    8,893.56x = 60,305,591.81
  5. Step 5: Solve for x
    x = 60,305,591.81/8,893.56
  6. Step 6: Final answer
    x = 6,780.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.