Home / 7,839.90-11,755.12-3,680.82

Finding the Fourth Proportional to 7,839.90, 11,755.12 and 3,680.82

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Solution

The fourth proportional to 7,839.90, 11,755.12 and 3,680.82 is: 5,519.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.90 : 11,755.12 = 3,680.82 : x
  2. Step 2: Convert to fraction form
    7,839.90/11,755.12 = 3,680.82/x
  3. Step 3: Cross multiply
    7,839.90x = 11,755.12 × 3,680.82
  4. Step 4: Simplify right side
    7,839.90x = 43,268,480.80
  5. Step 5: Solve for x
    x = 43,268,480.80/7,839.90
  6. Step 6: Final answer
    x = 5,519.01

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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.