Home / 2,334.75-3,221.97-1,286.79

Finding the Fourth Proportional to 2,334.75, 3,221.97 and 1,286.79

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Solution

The fourth proportional to 2,334.75, 3,221.97 and 1,286.79 is: 1,775.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,334.75 : 3,221.97 = 1,286.79 : x
  2. Step 2: Convert to fraction form
    2,334.75/3,221.97 = 1,286.79/x
  3. Step 3: Cross multiply
    2,334.75x = 3,221.97 × 1,286.79
  4. Step 4: Simplify right side
    2,334.75x = 4,145,998.78
  5. Step 5: Solve for x
    x = 4,145,998.78/2,334.75
  6. Step 6: Final answer
    x = 1,775.78

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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.