Home / 3,771.82-5,205.36-2,279.80

Finding the Fourth Proportional to 3,771.82, 5,205.36 and 2,279.80

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Solution

The fourth proportional to 3,771.82, 5,205.36 and 2,279.80 is: 3,146.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,771.82 : 5,205.36 = 2,279.80 : x
  2. Step 2: Convert to fraction form
    3,771.82/5,205.36 = 2,279.80/x
  3. Step 3: Cross multiply
    3,771.82x = 5,205.36 × 2,279.80
  4. Step 4: Simplify right side
    3,771.82x = 11,867,165.50
  5. Step 5: Solve for x
    x = 11,867,165.50/3,771.82
  6. Step 6: Final answer
    x = 3,146.27

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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.