Home / 11,861.62-17,786.39-3,961.29

Finding the Fourth Proportional to 11,861.62, 17,786.39 and 3,961.29

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Solution

The fourth proportional to 11,861.62, 17,786.39 and 3,961.29 is: 5,939.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.62 : 17,786.39 = 3,961.29 : x
  2. Step 2: Convert to fraction form
    11,861.62/17,786.39 = 3,961.29/x
  3. Step 3: Cross multiply
    11,861.62x = 17,786.39 × 3,961.29
  4. Step 4: Simplify right side
    11,861.62x = 70,457,048.84
  5. Step 5: Solve for x
    x = 70,457,048.84/11,861.62
  6. Step 6: Final answer
    x = 5,939.92

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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.