Home / 3,122.82-4,309.46-1,796.78

Finding the Fourth Proportional to 3,122.82, 4,309.46 and 1,796.78

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Solution

The fourth proportional to 3,122.82, 4,309.46 and 1,796.78 is: 2,479.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.82 : 4,309.46 = 1,796.78 : x
  2. Step 2: Convert to fraction form
    3,122.82/4,309.46 = 1,796.78/x
  3. Step 3: Cross multiply
    3,122.82x = 4,309.46 × 1,796.78
  4. Step 4: Simplify right side
    3,122.82x = 7,743,151.54
  5. Step 5: Solve for x
    x = 7,743,151.54/3,122.82
  6. Step 6: Final answer
    x = 2,479.54

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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.