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Finding the Fourth Proportional to 3,999.56, 5,999.13 and 3,879.27

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Solution

The fourth proportional to 3,999.56, 5,999.13 and 3,879.27 is: 5,818.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.56 : 5,999.13 = 3,879.27 : x
  2. Step 2: Convert to fraction form
    3,999.56/5,999.13 = 3,879.27/x
  3. Step 3: Cross multiply
    3,999.56x = 5,999.13 × 3,879.27
  4. Step 4: Simplify right side
    3,999.56x = 23,272,245.04
  5. Step 5: Solve for x
    x = 23,272,245.04/3,999.56
  6. Step 6: Final answer
    x = 5,818.71

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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.