Home / 8,422.40-12,631.18-3,227.08

Finding the Fourth Proportional to 8,422.40, 12,631.18 and 3,227.08

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Solution

The fourth proportional to 8,422.40, 12,631.18 and 3,227.08 is: 4,839.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.40 : 12,631.18 = 3,227.08 : x
  2. Step 2: Convert to fraction form
    8,422.40/12,631.18 = 3,227.08/x
  3. Step 3: Cross multiply
    8,422.40x = 12,631.18 × 3,227.08
  4. Step 4: Simplify right side
    8,422.40x = 40,761,828.35
  5. Step 5: Solve for x
    x = 40,761,828.35/8,422.40
  6. Step 6: Final answer
    x = 4,839.69

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1.5x scale

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.