Home / 5,185.44-7,781.38-2,107.44

Finding the Fourth Proportional to 5,185.44, 7,781.38 and 2,107.44

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Solution

The fourth proportional to 5,185.44, 7,781.38 and 2,107.44 is: 3,162.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.44 : 7,781.38 = 2,107.44 : x
  2. Step 2: Convert to fraction form
    5,185.44/7,781.38 = 2,107.44/x
  3. Step 3: Cross multiply
    5,185.44x = 7,781.38 × 2,107.44
  4. Step 4: Simplify right side
    5,185.44x = 16,398,791.47
  5. Step 5: Solve for x
    x = 16,398,791.47/5,185.44
  6. Step 6: Final answer
    x = 3,162.47

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1.5x scale

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.