Home / 4,753.20-7,121.32-3,189.68

Finding the Fourth Proportional to 4,753.20, 7,121.32 and 3,189.68

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Solution

The fourth proportional to 4,753.20, 7,121.32 and 3,189.68 is: 4,778.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,753.20 : 7,121.32 = 3,189.68 : x
  2. Step 2: Convert to fraction form
    4,753.20/7,121.32 = 3,189.68/x
  3. Step 3: Cross multiply
    4,753.20x = 7,121.32 × 3,189.68
  4. Step 4: Simplify right side
    4,753.20x = 22,714,731.98
  5. Step 5: Solve for x
    x = 22,714,731.98/4,753.20
  6. Step 6: Final answer
    x = 4,778.83

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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.