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Finding the Fourth Proportional to 3,600.74, 5,399.88 and 1,408.88

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Solution

The fourth proportional to 3,600.74, 5,399.88 and 1,408.88 is: 2,112.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.74 : 5,399.88 = 1,408.88 : x
  2. Step 2: Convert to fraction form
    3,600.74/5,399.88 = 1,408.88/x
  3. Step 3: Cross multiply
    3,600.74x = 5,399.88 × 1,408.88
  4. Step 4: Simplify right side
    3,600.74x = 7,607,755.94
  5. Step 5: Solve for x
    x = 7,607,755.94/3,600.74
  6. Step 6: Final answer
    x = 2,112.83

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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.