Home / 7,982.91-11,984.96-6,820.38

Finding the Fourth Proportional to 7,982.91, 11,984.96 and 6,820.38

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Solution

The fourth proportional to 7,982.91, 11,984.96 and 6,820.38 is: 10,239.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.91 : 11,984.96 = 6,820.38 : x
  2. Step 2: Convert to fraction form
    7,982.91/11,984.96 = 6,820.38/x
  3. Step 3: Cross multiply
    7,982.91x = 11,984.96 × 6,820.38
  4. Step 4: Simplify right side
    7,982.91x = 81,741,915.23
  5. Step 5: Solve for x
    x = 81,741,915.23/7,982.91
  6. Step 6: Final answer
    x = 10,239.62

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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.