Home / 3,679.20-5,078.88-2,629.44

Finding the Fourth Proportional to 3,679.20, 5,078.88 and 2,629.44

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Solution

The fourth proportional to 3,679.20, 5,078.88 and 2,629.44 is: 3,629.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.20 : 5,078.88 = 2,629.44 : x
  2. Step 2: Convert to fraction form
    3,679.20/5,078.88 = 2,629.44/x
  3. Step 3: Cross multiply
    3,679.20x = 5,078.88 × 2,629.44
  4. Step 4: Simplify right side
    3,679.20x = 13,354,610.23
  5. Step 5: Solve for x
    x = 13,354,610.23/3,679.20
  6. Step 6: Final answer
    x = 3,629.76

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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.