Home / 7,961.76-11,942.67-2,415.15

Finding the Fourth Proportional to 7,961.76, 11,942.67 and 2,415.15

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Solution

The fourth proportional to 7,961.76, 11,942.67 and 2,415.15 is: 3,622.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.76 : 11,942.67 = 2,415.15 : x
  2. Step 2: Convert to fraction form
    7,961.76/11,942.67 = 2,415.15/x
  3. Step 3: Cross multiply
    7,961.76x = 11,942.67 × 2,415.15
  4. Step 4: Simplify right side
    7,961.76x = 28,843,339.45
  5. Step 5: Solve for x
    x = 28,843,339.45/7,961.76
  6. Step 6: Final answer
    x = 3,622.73

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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.