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Finding the Fourth Proportional to 6,687.18, 10,034.28 and 3,919.28

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Solution

The fourth proportional to 6,687.18, 10,034.28 and 3,919.28 is: 5,880.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,687.18 : 10,034.28 = 3,919.28 : x
  2. Step 2: Convert to fraction form
    6,687.18/10,034.28 = 3,919.28/x
  3. Step 3: Cross multiply
    6,687.18x = 10,034.28 × 3,919.28
  4. Step 4: Simplify right side
    6,687.18x = 39,327,102.75
  5. Step 5: Solve for x
    x = 39,327,102.75/6,687.18
  6. Step 6: Final answer
    x = 5,880.97

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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.