Home / 2,122.28-3,184.22-1,198.88

Finding the Fourth Proportional to 2,122.28, 3,184.22 and 1,198.88

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Solution

The fourth proportional to 2,122.28, 3,184.22 and 1,198.88 is: 1,798.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.28 : 3,184.22 = 1,198.88 : x
  2. Step 2: Convert to fraction form
    2,122.28/3,184.22 = 1,198.88/x
  3. Step 3: Cross multiply
    2,122.28x = 3,184.22 × 1,198.88
  4. Step 4: Simplify right side
    2,122.28x = 3,817,497.67
  5. Step 5: Solve for x
    x = 3,817,497.67/2,122.28
  6. Step 6: Final answer
    x = 1,798.77

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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.