Home / 3,288.60-4,932.90-2,122.20

Finding the Fourth Proportional to 3,288.60, 4,932.90 and 2,122.20

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Solution

The fourth proportional to 3,288.60, 4,932.90 and 2,122.20 is: 3,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,288.60 : 4,932.90 = 2,122.20 : x
  2. Step 2: Convert to fraction form
    3,288.60/4,932.90 = 2,122.20/x
  3. Step 3: Cross multiply
    3,288.60x = 4,932.90 × 2,122.20
  4. Step 4: Simplify right side
    3,288.60x = 10,468,600.38
  5. Step 5: Solve for x
    x = 10,468,600.38/3,288.60
  6. Step 6: Final answer
    x = 3,183.30

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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.