Home / 11,191.92-16,786.78-3,400.80

Finding the Fourth Proportional to 11,191.92, 16,786.78 and 3,400.80

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Solution

The fourth proportional to 11,191.92, 16,786.78 and 3,400.80 is: 5,100.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.92 : 16,786.78 = 3,400.80 : x
  2. Step 2: Convert to fraction form
    11,191.92/16,786.78 = 3,400.80/x
  3. Step 3: Cross multiply
    11,191.92x = 16,786.78 × 3,400.80
  4. Step 4: Simplify right side
    11,191.92x = 57,088,481.42
  5. Step 5: Solve for x
    x = 57,088,481.42/11,191.92
  6. Step 6: Final answer
    x = 5,100.87

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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.