Home / 3,105.12-4,279.56-2,743.04

Finding the Fourth Proportional to 3,105.12, 4,279.56 and 2,743.04

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Solution

The fourth proportional to 3,105.12, 4,279.56 and 2,743.04 is: 3,780.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.12 : 4,279.56 = 2,743.04 : x
  2. Step 2: Convert to fraction form
    3,105.12/4,279.56 = 2,743.04/x
  3. Step 3: Cross multiply
    3,105.12x = 4,279.56 × 2,743.04
  4. Step 4: Simplify right side
    3,105.12x = 11,739,004.26
  5. Step 5: Solve for x
    x = 11,739,004.26/3,105.12
  6. Step 6: Final answer
    x = 3,780.53

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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.