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Finding the Fourth Proportional to 6,139.32, 9,213.84 and 2,679

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Solution

The fourth proportional to 6,139.32, 9,213.84 and 2,679 is: 4,020.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.32 : 9,213.84 = 2,679 : x
  2. Step 2: Convert to fraction form
    6,139.32/9,213.84 = 2,679/x
  3. Step 3: Cross multiply
    6,139.32x = 9,213.84 × 2,679
  4. Step 4: Simplify right side
    6,139.32x = 24,683,877.36
  5. Step 5: Solve for x
    x = 24,683,877.36/6,139.32
  6. Step 6: Final answer
    x = 4,020.62

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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.