Home / 7,780.38-11,669.13-2,584.86

Finding the Fourth Proportional to 7,780.38, 11,669.13 and 2,584.86

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Solution

The fourth proportional to 7,780.38, 11,669.13 and 2,584.86 is: 3,876.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.38 : 11,669.13 = 2,584.86 : x
  2. Step 2: Convert to fraction form
    7,780.38/11,669.13 = 2,584.86/x
  3. Step 3: Cross multiply
    7,780.38x = 11,669.13 × 2,584.86
  4. Step 4: Simplify right side
    7,780.38x = 30,163,067.37
  5. Step 5: Solve for x
    x = 30,163,067.37/7,780.38
  6. Step 6: Final answer
    x = 3,876.81

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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.