Home / 11,391.72-17,087.13-3,997.86

Finding the Fourth Proportional to 11,391.72, 17,087.13 and 3,997.86

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Solution

The fourth proportional to 11,391.72, 17,087.13 and 3,997.86 is: 5,996.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.72 : 17,087.13 = 3,997.86 : x
  2. Step 2: Convert to fraction form
    11,391.72/17,087.13 = 3,997.86/x
  3. Step 3: Cross multiply
    11,391.72x = 17,087.13 × 3,997.86
  4. Step 4: Simplify right side
    11,391.72x = 68,311,953.54
  5. Step 5: Solve for x
    x = 68,311,953.54/11,391.72
  6. Step 6: Final answer
    x = 5,996.63

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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.