Home / 2,874.20-4,311.90-926.55

Finding the Fourth Proportional to 2,874.20, 4,311.90 and 926.55

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Solution

The fourth proportional to 2,874.20, 4,311.90 and 926.55 is: 1,390.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.20 : 4,311.90 = 926.55 : x
  2. Step 2: Convert to fraction form
    2,874.20/4,311.90 = 926.55/x
  3. Step 3: Cross multiply
    2,874.20x = 4,311.90 × 926.55
  4. Step 4: Simplify right side
    2,874.20x = 3,995,190.95
  5. Step 5: Solve for x
    x = 3,995,190.95/2,874.20
  6. Step 6: Final answer
    x = 1,390.02

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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.