Home / 2,986.20-4,122.84-2,198.88

Finding the Fourth Proportional to 2,986.20, 4,122.84 and 2,198.88

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Solution

The fourth proportional to 2,986.20, 4,122.84 and 2,198.88 is: 3,035.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.20 : 4,122.84 = 2,198.88 : x
  2. Step 2: Convert to fraction form
    2,986.20/4,122.84 = 2,198.88/x
  3. Step 3: Cross multiply
    2,986.20x = 4,122.84 × 2,198.88
  4. Step 4: Simplify right side
    2,986.20x = 9,065,630.42
  5. Step 5: Solve for x
    x = 9,065,630.42/2,986.20
  6. Step 6: Final answer
    x = 3,035.84

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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.