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Finding the Fourth Proportional to 3,960.87, 5,943.35 and 2,874.19

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Solution

The fourth proportional to 3,960.87, 5,943.35 and 2,874.19 is: 4,312.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.87 : 5,943.35 = 2,874.19 : x
  2. Step 2: Convert to fraction form
    3,960.87/5,943.35 = 2,874.19/x
  3. Step 3: Cross multiply
    3,960.87x = 5,943.35 × 2,874.19
  4. Step 4: Simplify right side
    3,960.87x = 17,082,317.14
  5. Step 5: Solve for x
    x = 17,082,317.14/3,960.87
  6. Step 6: Final answer
    x = 4,312.77

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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.