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Finding the Fourth Proportional to 3,999.73, 5,999.46 and 1,077.88

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Solution

The fourth proportional to 3,999.73, 5,999.46 and 1,077.88 is: 1,616.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.73 : 5,999.46 = 1,077.88 : x
  2. Step 2: Convert to fraction form
    3,999.73/5,999.46 = 1,077.88/x
  3. Step 3: Cross multiply
    3,999.73x = 5,999.46 × 1,077.88
  4. Step 4: Simplify right side
    3,999.73x = 6,466,697.94
  5. Step 5: Solve for x
    x = 6,466,697.94/3,999.73
  6. Step 6: Final answer
    x = 1,616.78

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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.