Home / 11,187.91-16,780.78-3,396.79

Finding the Fourth Proportional to 11,187.91, 16,780.78 and 3,396.79

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Solution

The fourth proportional to 11,187.91, 16,780.78 and 3,396.79 is: 5,094.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.91 : 16,780.78 = 3,396.79 : x
  2. Step 2: Convert to fraction form
    11,187.91/16,780.78 = 3,396.79/x
  3. Step 3: Cross multiply
    11,187.91x = 16,780.78 × 3,396.79
  4. Step 4: Simplify right side
    11,187.91x = 57,000,785.70
  5. Step 5: Solve for x
    x = 57,000,785.70/11,187.91
  6. Step 6: Final answer
    x = 5,094.86

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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.