Home / 2,672.20-4,005.90-2,380.60

Finding the Fourth Proportional to 2,672.20, 4,005.90 and 2,380.60

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Solution

The fourth proportional to 2,672.20, 4,005.90 and 2,380.60 is: 3,568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.20 : 4,005.90 = 2,380.60 : x
  2. Step 2: Convert to fraction form
    2,672.20/4,005.90 = 2,380.60/x
  3. Step 3: Cross multiply
    2,672.20x = 4,005.90 × 2,380.60
  4. Step 4: Simplify right side
    2,672.20x = 9,536,445.54
  5. Step 5: Solve for x
    x = 9,536,445.54/2,672.20
  6. Step 6: Final answer
    x = 3,568.76

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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.