Home / 7,945.38-11,919.84-2,608.79

Finding the Fourth Proportional to 7,945.38, 11,919.84 and 2,608.79

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Solution

The fourth proportional to 7,945.38, 11,919.84 and 2,608.79 is: 3,913.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.38 : 11,919.84 = 2,608.79 : x
  2. Step 2: Convert to fraction form
    7,945.38/11,919.84 = 2,608.79/x
  3. Step 3: Cross multiply
    7,945.38x = 11,919.84 × 2,608.79
  4. Step 4: Simplify right side
    7,945.38x = 31,096,379.41
  5. Step 5: Solve for x
    x = 31,096,379.41/7,945.38
  6. Step 6: Final answer
    x = 3,913.77

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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.