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Finding the Fourth Proportional to 11,997.75, 17,999.55 and 3,789.75

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Solution

The fourth proportional to 11,997.75, 17,999.55 and 3,789.75 is: 5,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,997.75 : 17,999.55 = 3,789.75 : x
  2. Step 2: Convert to fraction form
    11,997.75/17,999.55 = 3,789.75/x
  3. Step 3: Cross multiply
    11,997.75x = 17,999.55 × 3,789.75
  4. Step 4: Simplify right side
    11,997.75x = 68,213,794.61
  5. Step 5: Solve for x
    x = 68,213,794.61/11,997.75
  6. Step 6: Final answer
    x = 5,685.55

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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.