Home / 7,968.39-11,951.82-2,421.78

Finding the Fourth Proportional to 7,968.39, 11,951.82 and 2,421.78

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Solution

The fourth proportional to 7,968.39, 11,951.82 and 2,421.78 is: 3,632.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.39 : 11,951.82 = 2,421.78 : x
  2. Step 2: Convert to fraction form
    7,968.39/11,951.82 = 2,421.78/x
  3. Step 3: Cross multiply
    7,968.39x = 11,951.82 × 2,421.78
  4. Step 4: Simplify right side
    7,968.39x = 28,944,680.95
  5. Step 5: Solve for x
    x = 28,944,680.95/7,968.39
  6. Step 6: Final answer
    x = 3,632.44

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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.