Home / 2,339.91-3,229.07-1,291.91

Finding the Fourth Proportional to 2,339.91, 3,229.07 and 1,291.91

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Solution

The fourth proportional to 2,339.91, 3,229.07 and 1,291.91 is: 1,782.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.91 : 3,229.07 = 1,291.91 : x
  2. Step 2: Convert to fraction form
    2,339.91/3,229.07 = 1,291.91/x
  3. Step 3: Cross multiply
    2,339.91x = 3,229.07 × 1,291.91
  4. Step 4: Simplify right side
    2,339.91x = 4,171,645.22
  5. Step 5: Solve for x
    x = 4,171,645.22/2,339.91
  6. Step 6: Final answer
    x = 1,782.82

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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.