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Finding the Fourth Proportional to 10,891.12, 16,343.94 and 3,965.62

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Solution

The fourth proportional to 10,891.12, 16,343.94 and 3,965.62 is: 5,951.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.12 : 16,343.94 = 3,965.62 : x
  2. Step 2: Convert to fraction form
    10,891.12/16,343.94 = 3,965.62/x
  3. Step 3: Cross multiply
    10,891.12x = 16,343.94 × 3,965.62
  4. Step 4: Simplify right side
    10,891.12x = 64,813,855.34
  5. Step 5: Solve for x
    x = 64,813,855.34/10,891.12
  6. Step 6: Final answer
    x = 5,951.07

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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.