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Finding the Fourth Proportional to 8,936.43, 12,331.84 and 4,957.45

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Solution

The fourth proportional to 8,936.43, 12,331.84 and 4,957.45 is: 6,841.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.43 : 12,331.84 = 4,957.45 : x
  2. Step 2: Convert to fraction form
    8,936.43/12,331.84 = 4,957.45/x
  3. Step 3: Cross multiply
    8,936.43x = 12,331.84 × 4,957.45
  4. Step 4: Simplify right side
    8,936.43x = 61,134,480.21
  5. Step 5: Solve for x
    x = 61,134,480.21/8,936.43
  6. Step 6: Final answer
    x = 6,841.04

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