Home / 6,821.39-10,231.39-2,141.44

Finding the Fourth Proportional to 6,821.39, 10,231.39 and 2,141.44

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Solution

The fourth proportional to 6,821.39, 10,231.39 and 2,141.44 is: 3,211.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.39 : 10,231.39 = 2,141.44 : x
  2. Step 2: Convert to fraction form
    6,821.39/10,231.39 = 2,141.44/x
  3. Step 3: Cross multiply
    6,821.39x = 10,231.39 × 2,141.44
  4. Step 4: Simplify right side
    6,821.39x = 21,909,845.94
  5. Step 5: Solve for x
    x = 21,909,845.94/6,821.39
  6. Step 6: Final answer
    x = 3,211.93

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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.