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Finding the Fourth Proportional to 3,892.14, 5,839.38 and 1,813.38

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Solution

The fourth proportional to 3,892.14, 5,839.38 and 1,813.38 is: 2,720.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.14 : 5,839.38 = 1,813.38 : x
  2. Step 2: Convert to fraction form
    3,892.14/5,839.38 = 1,813.38/x
  3. Step 3: Cross multiply
    3,892.14x = 5,839.38 × 1,813.38
  4. Step 4: Simplify right side
    3,892.14x = 10,589,014.90
  5. Step 5: Solve for x
    x = 10,589,014.90/3,892.14
  6. Step 6: Final answer
    x = 2,720.62

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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.