Home / 8,115.34-12,165.67-3,183.66

Finding the Fourth Proportional to 8,115.34, 12,165.67 and 3,183.66

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Solution

The fourth proportional to 8,115.34, 12,165.67 and 3,183.66 is: 4,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.34 : 12,165.67 = 3,183.66 : x
  2. Step 2: Convert to fraction form
    8,115.34/12,165.67 = 3,183.66/x
  3. Step 3: Cross multiply
    8,115.34x = 12,165.67 × 3,183.66
  4. Step 4: Simplify right side
    8,115.34x = 38,731,308.81
  5. Step 5: Solve for x
    x = 38,731,308.81/8,115.34
  6. Step 6: Final answer
    x = 4,772.60

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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.