Home / 8,266.42-12,400.41-2,719.78

Finding the Fourth Proportional to 8,266.42, 12,400.41 and 2,719.78

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Solution

The fourth proportional to 8,266.42, 12,400.41 and 2,719.78 is: 4,079.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.42 : 12,400.41 = 2,719.78 : x
  2. Step 2: Convert to fraction form
    8,266.42/12,400.41 = 2,719.78/x
  3. Step 3: Cross multiply
    8,266.42x = 12,400.41 × 2,719.78
  4. Step 4: Simplify right side
    8,266.42x = 33,726,351.01
  5. Step 5: Solve for x
    x = 33,726,351.01/8,266.42
  6. Step 6: Final answer
    x = 4,079.92

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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.