Home / 3,842.39-5,302.61-2,163.86

Finding the Fourth Proportional to 3,842.39, 5,302.61 and 2,163.86

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Solution

The fourth proportional to 3,842.39, 5,302.61 and 2,163.86 is: 2,986.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.39 : 5,302.61 = 2,163.86 : x
  2. Step 2: Convert to fraction form
    3,842.39/5,302.61 = 2,163.86/x
  3. Step 3: Cross multiply
    3,842.39x = 5,302.61 × 2,163.86
  4. Step 4: Simplify right side
    3,842.39x = 11,474,105.67
  5. Step 5: Solve for x
    x = 11,474,105.67/3,842.39
  6. Step 6: Final answer
    x = 2,986.19

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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.