Home / 7,894.14-11,839.92-3,213.96

Finding the Fourth Proportional to 7,894.14, 11,839.92 and 3,213.96

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Solution

The fourth proportional to 7,894.14, 11,839.92 and 3,213.96 is: 4,820.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894.14 : 11,839.92 = 3,213.96 : x
  2. Step 2: Convert to fraction form
    7,894.14/11,839.92 = 3,213.96/x
  3. Step 3: Cross multiply
    7,894.14x = 11,839.92 × 3,213.96
  4. Step 4: Simplify right side
    7,894.14x = 38,053,029.28
  5. Step 5: Solve for x
    x = 38,053,029.28/7,894.14
  6. Step 6: Final answer
    x = 4,820.41

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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.