Home / 8,269.57-12,389.91-6,891.76

Finding the Fourth Proportional to 8,269.57, 12,389.91 and 6,891.76

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Solution

The fourth proportional to 8,269.57, 12,389.91 and 6,891.76 is: 10,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.57 : 12,389.91 = 6,891.76 : x
  2. Step 2: Convert to fraction form
    8,269.57/12,389.91 = 6,891.76/x
  3. Step 3: Cross multiply
    8,269.57x = 12,389.91 × 6,891.76
  4. Step 4: Simplify right side
    8,269.57x = 85,388,286.14
  5. Step 5: Solve for x
    x = 85,388,286.14/8,269.57
  6. Step 6: Final answer
    x = 10,325.60

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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.