Home / 7,917.82-11,872.71-2,650.96

Finding the Fourth Proportional to 7,917.82, 11,872.71 and 2,650.96

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Solution

The fourth proportional to 7,917.82, 11,872.71 and 2,650.96 is: 3,975.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.82 : 11,872.71 = 2,650.96 : x
  2. Step 2: Convert to fraction form
    7,917.82/11,872.71 = 2,650.96/x
  3. Step 3: Cross multiply
    7,917.82x = 11,872.71 × 2,650.96
  4. Step 4: Simplify right side
    7,917.82x = 31,474,079.30
  5. Step 5: Solve for x
    x = 31,474,079.30/7,917.82
  6. Step 6: Final answer
    x = 3,975.09

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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.