Home / 5,456.97-8,189.55-2,125.76

Finding the Fourth Proportional to 5,456.97, 8,189.55 and 2,125.76

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Solution

The fourth proportional to 5,456.97, 8,189.55 and 2,125.76 is: 3,190.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.97 : 8,189.55 = 2,125.76 : x
  2. Step 2: Convert to fraction form
    5,456.97/8,189.55 = 2,125.76/x
  3. Step 3: Cross multiply
    5,456.97x = 8,189.55 × 2,125.76
  4. Step 4: Simplify right side
    5,456.97x = 17,408,976.86
  5. Step 5: Solve for x
    x = 17,408,976.86/5,456.97
  6. Step 6: Final answer
    x = 3,190.23

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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.