Home / 2,339.12-3,227.92-1,291.16

Finding the Fourth Proportional to 2,339.12, 3,227.92 and 1,291.16

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Solution

The fourth proportional to 2,339.12, 3,227.92 and 1,291.16 is: 1,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.12 : 3,227.92 = 1,291.16 : x
  2. Step 2: Convert to fraction form
    2,339.12/3,227.92 = 1,291.16/x
  3. Step 3: Cross multiply
    2,339.12x = 3,227.92 × 1,291.16
  4. Step 4: Simplify right side
    2,339.12x = 4,167,741.82
  5. Step 5: Solve for x
    x = 4,167,741.82/2,339.12
  6. Step 6: Final answer
    x = 1,781.76

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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.