Home / 5,197.56-7,172.43-2,839.73

Finding the Fourth Proportional to 5,197.56, 7,172.43 and 2,839.73

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Solution

The fourth proportional to 5,197.56, 7,172.43 and 2,839.73 is: 3,918.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,197.56 : 7,172.43 = 2,839.73 : x
  2. Step 2: Convert to fraction form
    5,197.56/7,172.43 = 2,839.73/x
  3. Step 3: Cross multiply
    5,197.56x = 7,172.43 × 2,839.73
  4. Step 4: Simplify right side
    5,197.56x = 20,367,728.78
  5. Step 5: Solve for x
    x = 20,367,728.78/5,197.56
  6. Step 6: Final answer
    x = 3,918.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.