Home / 2,231.26-3,079.14-1,222.97

Finding the Fourth Proportional to 2,231.26, 3,079.14 and 1,222.97

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Solution

The fourth proportional to 2,231.26, 3,079.14 and 1,222.97 is: 1,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.26 : 3,079.14 = 1,222.97 : x
  2. Step 2: Convert to fraction form
    2,231.26/3,079.14 = 1,222.97/x
  3. Step 3: Cross multiply
    2,231.26x = 3,079.14 × 1,222.97
  4. Step 4: Simplify right side
    2,231.26x = 3,765,692.29
  5. Step 5: Solve for x
    x = 3,765,692.29/2,231.26
  6. Step 6: Final answer
    x = 1,687.70

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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.