Home / 3,318.20-4,977.30-2,540.60

Finding the Fourth Proportional to 3,318.20, 4,977.30 and 2,540.60

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Solution

The fourth proportional to 3,318.20, 4,977.30 and 2,540.60 is: 3,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.20 : 4,977.30 = 2,540.60 : x
  2. Step 2: Convert to fraction form
    3,318.20/4,977.30 = 2,540.60/x
  3. Step 3: Cross multiply
    3,318.20x = 4,977.30 × 2,540.60
  4. Step 4: Simplify right side
    3,318.20x = 12,645,328.38
  5. Step 5: Solve for x
    x = 12,645,328.38/3,318.20
  6. Step 6: Final answer
    x = 3,810.90

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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.