Home / 2,189.82-3,021.26-1,305.91

Finding the Fourth Proportional to 2,189.82, 3,021.26 and 1,305.91

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Solution

The fourth proportional to 2,189.82, 3,021.26 and 1,305.91 is: 1,801.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.82 : 3,021.26 = 1,305.91 : x
  2. Step 2: Convert to fraction form
    2,189.82/3,021.26 = 1,305.91/x
  3. Step 3: Cross multiply
    2,189.82x = 3,021.26 × 1,305.91
  4. Step 4: Simplify right side
    2,189.82x = 3,945,493.65
  5. Step 5: Solve for x
    x = 3,945,493.65/2,189.82
  6. Step 6: Final answer
    x = 1,801.74

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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.