Home / 3,843.40-5,765.90-2,198.60

Finding the Fourth Proportional to 3,843.40, 5,765.90 and 2,198.60

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Solution

The fourth proportional to 3,843.40, 5,765.90 and 2,198.60 is: 3,298.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,843.40 : 5,765.90 = 2,198.60 : x
  2. Step 2: Convert to fraction form
    3,843.40/5,765.90 = 2,198.60/x
  3. Step 3: Cross multiply
    3,843.40x = 5,765.90 × 2,198.60
  4. Step 4: Simplify right side
    3,843.40x = 12,676,907.74
  5. Step 5: Solve for x
    x = 12,676,907.74/3,843.40
  6. Step 6: Final answer
    x = 3,298.36

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1.5x scale

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.