Home / 9,186.20-12,668.97-7,939.61

Finding the Fourth Proportional to 9,186.20, 12,668.97 and 7,939.61

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Solution

The fourth proportional to 9,186.20, 12,668.97 and 7,939.61 is: 10,949.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186.20 : 12,668.97 = 7,939.61 : x
  2. Step 2: Convert to fraction form
    9,186.20/12,668.97 = 7,939.61/x
  3. Step 3: Cross multiply
    9,186.20x = 12,668.97 × 7,939.61
  4. Step 4: Simplify right side
    9,186.20x = 100,586,680.90
  5. Step 5: Solve for x
    x = 100,586,680.90/9,186.20
  6. Step 6: Final answer
    x = 10,949.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.