Home / 4,198.78-6,298.20-1,425.49

Finding the Fourth Proportional to 4,198.78, 6,298.20 and 1,425.49

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Solution

The fourth proportional to 4,198.78, 6,298.20 and 1,425.49 is: 2,138.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,198.78 : 6,298.20 = 1,425.49 : x
  2. Step 2: Convert to fraction form
    4,198.78/6,298.20 = 1,425.49/x
  3. Step 3: Cross multiply
    4,198.78x = 6,298.20 × 1,425.49
  4. Step 4: Simplify right side
    4,198.78x = 8,978,021.12
  5. Step 5: Solve for x
    x = 8,978,021.12/4,198.78
  6. Step 6: Final answer
    x = 2,138.25

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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.