Home / 5,781.94-7,979.07-3,129.37

Finding the Fourth Proportional to 5,781.94, 7,979.07 and 3,129.37

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Solution

The fourth proportional to 5,781.94, 7,979.07 and 3,129.37 is: 4,318.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.94 : 7,979.07 = 3,129.37 : x
  2. Step 2: Convert to fraction form
    5,781.94/7,979.07 = 3,129.37/x
  3. Step 3: Cross multiply
    5,781.94x = 7,979.07 × 3,129.37
  4. Step 4: Simplify right side
    5,781.94x = 24,969,454.07
  5. Step 5: Solve for x
    x = 24,969,454.07/5,781.94
  6. Step 6: Final answer
    x = 4,318.53

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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.