Home / 7,780.22-11,672.25-2,586.14

Finding the Fourth Proportional to 7,780.22, 11,672.25 and 2,586.14

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Solution

The fourth proportional to 7,780.22, 11,672.25 and 2,586.14 is: 3,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.22 : 11,672.25 = 2,586.14 : x
  2. Step 2: Convert to fraction form
    7,780.22/11,672.25 = 2,586.14/x
  3. Step 3: Cross multiply
    7,780.22x = 11,672.25 × 2,586.14
  4. Step 4: Simplify right side
    7,780.22x = 30,186,072.62
  5. Step 5: Solve for x
    x = 30,186,072.62/7,780.22
  6. Step 6: Final answer
    x = 3,879.85

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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.