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Finding the Fourth Proportional to 11,861.97, 17,790.93 and 3,963.93

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Solution

The fourth proportional to 11,861.97, 17,790.93 and 3,963.93 is: 5,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.97 : 17,790.93 = 3,963.93 : x
  2. Step 2: Convert to fraction form
    11,861.97/17,790.93 = 3,963.93/x
  3. Step 3: Cross multiply
    11,861.97x = 17,790.93 × 3,963.93
  4. Step 4: Simplify right side
    11,861.97x = 70,522,001.15
  5. Step 5: Solve for x
    x = 70,522,001.15/11,861.97
  6. Step 6: Final answer
    x = 5,945.22

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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.