Home / 7,917.57-11,872.38-2,650.77

Finding the Fourth Proportional to 7,917.57, 11,872.38 and 2,650.77

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Solution

The fourth proportional to 7,917.57, 11,872.38 and 2,650.77 is: 3,974.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.57 : 11,872.38 = 2,650.77 : x
  2. Step 2: Convert to fraction form
    7,917.57/11,872.38 = 2,650.77/x
  3. Step 3: Cross multiply
    7,917.57x = 11,872.38 × 2,650.77
  4. Step 4: Simplify right side
    7,917.57x = 31,470,948.73
  5. Step 5: Solve for x
    x = 31,470,948.73/7,917.57
  6. Step 6: Final answer
    x = 3,974.82

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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.