Home / 2,091.01-3,121.25-1,936.84

Finding the Fourth Proportional to 2,091.01, 3,121.25 and 1,936.84

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Solution

The fourth proportional to 2,091.01, 3,121.25 and 1,936.84 is: 2,891.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.01 : 3,121.25 = 1,936.84 : x
  2. Step 2: Convert to fraction form
    2,091.01/3,121.25 = 1,936.84/x
  3. Step 3: Cross multiply
    2,091.01x = 3,121.25 × 1,936.84
  4. Step 4: Simplify right side
    2,091.01x = 6,045,361.85
  5. Step 5: Solve for x
    x = 6,045,361.85/2,091.01
  6. Step 6: Final answer
    x = 2,891.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.