Home / 5,408.27-8,107.39-2,121.39

Finding the Fourth Proportional to 5,408.27, 8,107.39 and 2,121.39

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Solution

The fourth proportional to 5,408.27, 8,107.39 and 2,121.39 is: 3,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.27 : 8,107.39 = 2,121.39 : x
  2. Step 2: Convert to fraction form
    5,408.27/8,107.39 = 2,121.39/x
  3. Step 3: Cross multiply
    5,408.27x = 8,107.39 × 2,121.39
  4. Step 4: Simplify right side
    5,408.27x = 17,198,938.72
  5. Step 5: Solve for x
    x = 17,198,938.72/5,408.27
  6. Step 6: Final answer
    x = 3,180.12

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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.