Home / 8,112.72-12,166.64-2,917.38

Finding the Fourth Proportional to 8,112.72, 12,166.64 and 2,917.38

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Solution

The fourth proportional to 8,112.72, 12,166.64 and 2,917.38 is: 4,375.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.72 : 12,166.64 = 2,917.38 : x
  2. Step 2: Convert to fraction form
    8,112.72/12,166.64 = 2,917.38/x
  3. Step 3: Cross multiply
    8,112.72x = 12,166.64 × 2,917.38
  4. Step 4: Simplify right side
    8,112.72x = 35,494,658.66
  5. Step 5: Solve for x
    x = 35,494,658.66/8,112.72
  6. Step 6: Final answer
    x = 4,375.19

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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.