Home / 3,171.12-4,374.36-2,238

Finding the Fourth Proportional to 3,171.12, 4,374.36 and 2,238

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Solution

The fourth proportional to 3,171.12, 4,374.36 and 2,238 is: 3,087.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.12 : 4,374.36 = 2,238 : x
  2. Step 2: Convert to fraction form
    3,171.12/4,374.36 = 2,238/x
  3. Step 3: Cross multiply
    3,171.12x = 4,374.36 × 2,238
  4. Step 4: Simplify right side
    3,171.12x = 9,789,817.68
  5. Step 5: Solve for x
    x = 9,789,817.68/3,171.12
  6. Step 6: Final answer
    x = 3,087.18

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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.