Home / 3,102.27-4,279.86-1,982.85

Finding the Fourth Proportional to 3,102.27, 4,279.86 and 1,982.85

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Solution

The fourth proportional to 3,102.27, 4,279.86 and 1,982.85 is: 2,735.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.27 : 4,279.86 = 1,982.85 : x
  2. Step 2: Convert to fraction form
    3,102.27/4,279.86 = 1,982.85/x
  3. Step 3: Cross multiply
    3,102.27x = 4,279.86 × 1,982.85
  4. Step 4: Simplify right side
    3,102.27x = 8,486,320.40
  5. Step 5: Solve for x
    x = 8,486,320.40/3,102.27
  6. Step 6: Final answer
    x = 2,735.52

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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.