Home / 8,422.22-12,631.62-2,872.56

Finding the Fourth Proportional to 8,422.22, 12,631.62 and 2,872.56

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Solution

The fourth proportional to 8,422.22, 12,631.62 and 2,872.56 is: 4,308.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.22 : 12,631.62 = 2,872.56 : x
  2. Step 2: Convert to fraction form
    8,422.22/12,631.62 = 2,872.56/x
  3. Step 3: Cross multiply
    8,422.22x = 12,631.62 × 2,872.56
  4. Step 4: Simplify right side
    8,422.22x = 36,285,086.35
  5. Step 5: Solve for x
    x = 36,285,086.35/8,422.22
  6. Step 6: Final answer
    x = 4,308.26

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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.