Home / 2,729.26-4,091.25-879.12

Finding the Fourth Proportional to 2,729.26, 4,091.25 and 879.12

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Solution

The fourth proportional to 2,729.26, 4,091.25 and 879.12 is: 1,317.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,729.26 : 4,091.25 = 879.12 : x
  2. Step 2: Convert to fraction form
    2,729.26/4,091.25 = 879.12/x
  3. Step 3: Cross multiply
    2,729.26x = 4,091.25 × 879.12
  4. Step 4: Simplify right side
    2,729.26x = 3,596,681.06
  5. Step 5: Solve for x
    x = 3,596,681.06/2,729.26
  6. Step 6: Final answer
    x = 1,317.82

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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.