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Finding the Fourth Proportional to 3,998.28, 5,997.48 and 1,076.88

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Solution

The fourth proportional to 3,998.28, 5,997.48 and 1,076.88 is: 1,615.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.28 : 5,997.48 = 1,076.88 : x
  2. Step 2: Convert to fraction form
    3,998.28/5,997.48 = 1,076.88/x
  3. Step 3: Cross multiply
    3,998.28x = 5,997.48 × 1,076.88
  4. Step 4: Simplify right side
    3,998.28x = 6,458,566.26
  5. Step 5: Solve for x
    x = 6,458,566.26/3,998.28
  6. Step 6: Final answer
    x = 1,615.34

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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.