Home / 2,748.12-4,125.12-1,105.80

Finding the Fourth Proportional to 2,748.12, 4,125.12 and 1,105.80

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Solution

The fourth proportional to 2,748.12, 4,125.12 and 1,105.80 is: 1,659.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.12 : 4,125.12 = 1,105.80 : x
  2. Step 2: Convert to fraction form
    2,748.12/4,125.12 = 1,105.80/x
  3. Step 3: Cross multiply
    2,748.12x = 4,125.12 × 1,105.80
  4. Step 4: Simplify right side
    2,748.12x = 4,561,557.70
  5. Step 5: Solve for x
    x = 4,561,557.70/2,748.12
  6. Step 6: Final answer
    x = 1,659.88

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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.