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Finding the Fourth Proportional to 12,085.92, 18,125.04 and 3,876

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Solution

The fourth proportional to 12,085.92, 18,125.04 and 3,876 is: 5,812.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.92 : 18,125.04 = 3,876 : x
  2. Step 2: Convert to fraction form
    12,085.92/18,125.04 = 3,876/x
  3. Step 3: Cross multiply
    12,085.92x = 18,125.04 × 3,876
  4. Step 4: Simplify right side
    12,085.92x = 70,252,655.04
  5. Step 5: Solve for x
    x = 70,252,655.04/12,085.92
  6. Step 6: Final answer
    x = 5,812.77

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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.