Home / 7,879.44-11,817.98-2,618.11

Finding the Fourth Proportional to 7,879.44, 11,817.98 and 2,618.11

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Solution

The fourth proportional to 7,879.44, 11,817.98 and 2,618.11 is: 3,926.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.44 : 11,817.98 = 2,618.11 : x
  2. Step 2: Convert to fraction form
    7,879.44/11,817.98 = 2,618.11/x
  3. Step 3: Cross multiply
    7,879.44x = 11,817.98 × 2,618.11
  4. Step 4: Simplify right side
    7,879.44x = 30,940,771.62
  5. Step 5: Solve for x
    x = 30,940,771.62/7,879.44
  6. Step 6: Final answer
    x = 3,926.77

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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.