Home / 8,222.10-12,337.20-3,291.90

Finding the Fourth Proportional to 8,222.10, 12,337.20 and 3,291.90

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Solution

The fourth proportional to 8,222.10, 12,337.20 and 3,291.90 is: 4,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,222.10 : 12,337.20 = 3,291.90 : x
  2. Step 2: Convert to fraction form
    8,222.10/12,337.20 = 3,291.90/x
  3. Step 3: Cross multiply
    8,222.10x = 12,337.20 × 3,291.90
  4. Step 4: Simplify right side
    8,222.10x = 40,612,828.68
  5. Step 5: Solve for x
    x = 40,612,828.68/8,222.10
  6. Step 6: Final answer
    x = 4,939.47

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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.