Home / 2,761.28-3,806.54-2,170.79

Finding the Fourth Proportional to 2,761.28, 3,806.54 and 2,170.79

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Solution

The fourth proportional to 2,761.28, 3,806.54 and 2,170.79 is: 2,992.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.28 : 3,806.54 = 2,170.79 : x
  2. Step 2: Convert to fraction form
    2,761.28/3,806.54 = 2,170.79/x
  3. Step 3: Cross multiply
    2,761.28x = 3,806.54 × 2,170.79
  4. Step 4: Simplify right side
    2,761.28x = 8,263,213.91
  5. Step 5: Solve for x
    x = 8,263,213.91/2,761.28
  6. Step 6: Final answer
    x = 2,992.53

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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.