Home / 2,002.20-3,002.85-615.30

Finding the Fourth Proportional to 2,002.20, 3,002.85 and 615.30

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Solution

The fourth proportional to 2,002.20, 3,002.85 and 615.30 is: 922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,002.20 : 3,002.85 = 615.30 : x
  2. Step 2: Convert to fraction form
    2,002.20/3,002.85 = 615.30/x
  3. Step 3: Cross multiply
    2,002.20x = 3,002.85 × 615.30
  4. Step 4: Simplify right side
    2,002.20x = 1,847,653.61
  5. Step 5: Solve for x
    x = 1,847,653.61/2,002.20
  6. Step 6: Final answer
    x = 922.81

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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.