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Finding the Fourth Proportional to 7,997, 11,999.82 and 3,893

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Solution

The fourth proportional to 7,997, 11,999.82 and 3,893 is: 5,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,997 : 11,999.82 = 3,893 : x
  2. Step 2: Convert to fraction form
    7,997/11,999.82 = 3,893/x
  3. Step 3: Cross multiply
    7,997x = 11,999.82 × 3,893
  4. Step 4: Simplify right side
    7,997x = 46,715,299.26
  5. Step 5: Solve for x
    x = 46,715,299.26/7,997
  6. Step 6: Final answer
    x = 5,841.60

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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.