Home / 3,851.20-5,311.04-2,451.52

Finding the Fourth Proportional to 3,851.20, 5,311.04 and 2,451.52

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Solution

The fourth proportional to 3,851.20, 5,311.04 and 2,451.52 is: 3,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.20 : 5,311.04 = 2,451.52 : x
  2. Step 2: Convert to fraction form
    3,851.20/5,311.04 = 2,451.52/x
  3. Step 3: Cross multiply
    3,851.20x = 5,311.04 × 2,451.52
  4. Step 4: Simplify right side
    3,851.20x = 13,020,120.78
  5. Step 5: Solve for x
    x = 13,020,120.78/3,851.20
  6. Step 6: Final answer
    x = 3,380.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.