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Finding the Fourth Proportional to 3,999.15, 5,998.73 and 2,147.72

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Solution

The fourth proportional to 3,999.15, 5,998.73 and 2,147.72 is: 3,221.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.15 : 5,998.73 = 2,147.72 : x
  2. Step 2: Convert to fraction form
    3,999.15/5,998.73 = 2,147.72/x
  3. Step 3: Cross multiply
    3,999.15x = 5,998.73 × 2,147.72
  4. Step 4: Simplify right side
    3,999.15x = 12,883,581.66
  5. Step 5: Solve for x
    x = 12,883,581.66/3,999.15
  6. Step 6: Final answer
    x = 3,221.58

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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.