Home / 3,772.20-5,205.69-2,279.85

Finding the Fourth Proportional to 3,772.20, 5,205.69 and 2,279.85

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Solution

The fourth proportional to 3,772.20, 5,205.69 and 2,279.85 is: 3,146.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.20 : 5,205.69 = 2,279.85 : x
  2. Step 2: Convert to fraction form
    3,772.20/5,205.69 = 2,279.85/x
  3. Step 3: Cross multiply
    3,772.20x = 5,205.69 × 2,279.85
  4. Step 4: Simplify right side
    3,772.20x = 11,868,192.35
  5. Step 5: Solve for x
    x = 11,868,192.35/3,772.20
  6. Step 6: Final answer
    x = 3,146.23

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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.