Home / 7,961.76-11,942.62-2,118.37

Finding the Fourth Proportional to 7,961.76, 11,942.62 and 2,118.37

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Solution

The fourth proportional to 7,961.76, 11,942.62 and 2,118.37 is: 3,177.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.76 : 11,942.62 = 2,118.37 : x
  2. Step 2: Convert to fraction form
    7,961.76/11,942.62 = 2,118.37/x
  3. Step 3: Cross multiply
    7,961.76x = 11,942.62 × 2,118.37
  4. Step 4: Simplify right side
    7,961.76x = 25,298,887.09
  5. Step 5: Solve for x
    x = 25,298,887.09/7,961.76
  6. Step 6: Final answer
    x = 3,177.55

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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.