Home / 8,172.11-12,258.17-5,711.73

Finding the Fourth Proportional to 8,172.11, 12,258.17 and 5,711.73

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Solution

The fourth proportional to 8,172.11, 12,258.17 and 5,711.73 is: 8,567.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.11 : 12,258.17 = 5,711.73 : x
  2. Step 2: Convert to fraction form
    8,172.11/12,258.17 = 5,711.73/x
  3. Step 3: Cross multiply
    8,172.11x = 12,258.17 × 5,711.73
  4. Step 4: Simplify right side
    8,172.11x = 70,015,328.78
  5. Step 5: Solve for x
    x = 70,015,328.78/8,172.11
  6. Step 6: Final answer
    x = 8,567.60

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Similar ratio
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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.