Home / 4,198.80-6,279.21-3,145.41

Finding the Fourth Proportional to 4,198.80, 6,279.21 and 3,145.41

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Solution

The fourth proportional to 4,198.80, 6,279.21 and 3,145.41 is: 4,703.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,198.80 : 6,279.21 = 3,145.41 : x
  2. Step 2: Convert to fraction form
    4,198.80/6,279.21 = 3,145.41/x
  3. Step 3: Cross multiply
    4,198.80x = 6,279.21 × 3,145.41
  4. Step 4: Simplify right side
    4,198.80x = 19,750,689.93
  5. Step 5: Solve for x
    x = 19,750,689.93/4,198.80
  6. Step 6: Final answer
    x = 4,703.89

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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.