Home / 2,085.33-3,129.21-1,161.66

Finding the Fourth Proportional to 2,085.33, 3,129.21 and 1,161.66

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Solution

The fourth proportional to 2,085.33, 3,129.21 and 1,161.66 is: 1,743.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.33 : 3,129.21 = 1,161.66 : x
  2. Step 2: Convert to fraction form
    2,085.33/3,129.21 = 1,161.66/x
  3. Step 3: Cross multiply
    2,085.33x = 3,129.21 × 1,161.66
  4. Step 4: Simplify right side
    2,085.33x = 3,635,078.09
  5. Step 5: Solve for x
    x = 3,635,078.09/2,085.33
  6. Step 6: Final answer
    x = 1,743.17

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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.