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Finding the Fourth Proportional to 3,999.39, 5,999.08 and 1,077.92

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Solution

The fourth proportional to 3,999.39, 5,999.08 and 1,077.92 is: 1,616.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.39 : 5,999.08 = 1,077.92 : x
  2. Step 2: Convert to fraction form
    3,999.39/5,999.08 = 1,077.92/x
  3. Step 3: Cross multiply
    3,999.39x = 5,999.08 × 1,077.92
  4. Step 4: Simplify right side
    3,999.39x = 6,466,528.31
  5. Step 5: Solve for x
    x = 6,466,528.31/3,999.39
  6. Step 6: Final answer
    x = 1,616.88

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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.