Home / 8,110.38-12,161.58-3,178.69

Finding the Fourth Proportional to 8,110.38, 12,161.58 and 3,178.69

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Solution

The fourth proportional to 8,110.38, 12,161.58 and 3,178.69 is: 4,766.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,110.38 : 12,161.58 = 3,178.69 : x
  2. Step 2: Convert to fraction form
    8,110.38/12,161.58 = 3,178.69/x
  3. Step 3: Cross multiply
    8,110.38x = 12,161.58 × 3,178.69
  4. Step 4: Simplify right side
    8,110.38x = 38,657,892.73
  5. Step 5: Solve for x
    x = 38,657,892.73/8,110.38
  6. Step 6: Final answer
    x = 4,766.47

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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.