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Finding the Fourth Proportional to 6,819, 10,223.31 and 2,661.93

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Solution

The fourth proportional to 6,819, 10,223.31 and 2,661.93 is: 3,990.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,819 : 10,223.31 = 2,661.93 : x
  2. Step 2: Convert to fraction form
    6,819/10,223.31 = 2,661.93/x
  3. Step 3: Cross multiply
    6,819x = 10,223.31 × 2,661.93
  4. Step 4: Simplify right side
    6,819x = 27,213,735.59
  5. Step 5: Solve for x
    x = 27,213,735.59/6,819
  6. Step 6: Final answer
    x = 3,990.87

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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.