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Finding the Fourth Proportional to 11,801.97, 17,691.48 and 3,899.07

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Solution

The fourth proportional to 11,801.97, 17,691.48 and 3,899.07 is: 5,844.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,801.97 : 17,691.48 = 3,899.07 : x
  2. Step 2: Convert to fraction form
    11,801.97/17,691.48 = 3,899.07/x
  3. Step 3: Cross multiply
    11,801.97x = 17,691.48 × 3,899.07
  4. Step 4: Simplify right side
    11,801.97x = 68,980,318.92
  5. Step 5: Solve for x
    x = 68,980,318.92/11,801.97
  6. Step 6: Final answer
    x = 5,844.81

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1.5x scale

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.