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Finding the Fourth Proportional to 8,091.76, 12,122.08 and 4,962.64

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Solution

The fourth proportional to 8,091.76, 12,122.08 and 4,962.64 is: 7,434.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.76 : 12,122.08 = 4,962.64 : x
  2. Step 2: Convert to fraction form
    8,091.76/12,122.08 = 4,962.64/x
  3. Step 3: Cross multiply
    8,091.76x = 12,122.08 × 4,962.64
  4. Step 4: Simplify right side
    8,091.76x = 60,157,519.09
  5. Step 5: Solve for x
    x = 60,157,519.09/8,091.76
  6. Step 6: Final answer
    x = 7,434.42

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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.