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Finding the Fourth Proportional to 7,997.90, 11,998.26 and 3,845.43

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Solution

The fourth proportional to 7,997.90, 11,998.26 and 3,845.43 is: 5,768.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,997.90 : 11,998.26 = 3,845.43 : x
  2. Step 2: Convert to fraction form
    7,997.90/11,998.26 = 3,845.43/x
  3. Step 3: Cross multiply
    7,997.90x = 11,998.26 × 3,845.43
  4. Step 4: Simplify right side
    7,997.90x = 46,138,468.95
  5. Step 5: Solve for x
    x = 46,138,468.95/7,997.90
  6. Step 6: Final answer
    x = 5,768.83

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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.