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Finding the Fourth Proportional to 6,872.76, 10,309.11 and 2,489.19

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Solution

The fourth proportional to 6,872.76, 10,309.11 and 2,489.19 is: 3,733.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.76 : 10,309.11 = 2,489.19 : x
  2. Step 2: Convert to fraction form
    6,872.76/10,309.11 = 2,489.19/x
  3. Step 3: Cross multiply
    6,872.76x = 10,309.11 × 2,489.19
  4. Step 4: Simplify right side
    6,872.76x = 25,661,333.52
  5. Step 5: Solve for x
    x = 25,661,333.52/6,872.76
  6. Step 6: Final answer
    x = 3,733.77

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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.