Home / 8,226.87-12,311.60-6,728.78

Finding the Fourth Proportional to 8,226.87, 12,311.60 and 6,728.78

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Solution

The fourth proportional to 8,226.87, 12,311.60 and 6,728.78 is: 10,069.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,226.87 : 12,311.60 = 6,728.78 : x
  2. Step 2: Convert to fraction form
    8,226.87/12,311.60 = 6,728.78/x
  3. Step 3: Cross multiply
    8,226.87x = 12,311.60 × 6,728.78
  4. Step 4: Simplify right side
    8,226.87x = 82,841,952.65
  5. Step 5: Solve for x
    x = 82,841,952.65/8,226.87
  6. Step 6: Final answer
    x = 10,069.68

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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.