Home / 3,711.20-5,562.30-2,148.20

Finding the Fourth Proportional to 3,711.20, 5,562.30 and 2,148.20

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Solution

The fourth proportional to 3,711.20, 5,562.30 and 2,148.20 is: 3,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.20 : 5,562.30 = 2,148.20 : x
  2. Step 2: Convert to fraction form
    3,711.20/5,562.30 = 2,148.20/x
  3. Step 3: Cross multiply
    3,711.20x = 5,562.30 × 2,148.20
  4. Step 4: Simplify right side
    3,711.20x = 11,948,932.86
  5. Step 5: Solve for x
    x = 11,948,932.86/3,711.20
  6. Step 6: Final answer
    x = 3,219.70

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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.