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Finding the Third Proportional to 5,725.69 and 6,340.78

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Solution

The third proportional to 5,725.69 and 6,340.78 is: 7,021.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,725.69 : 6,340.78 = 6,340.78 : x
  2. Step 2: Convert to fraction form
    5,725.69/6,340.78 = 6,340.78/x
  3. Step 3: Cross multiply
    5,725.69x = 6,340.78 × 6,340.78
  4. Step 4: Simplify right side
    5,725.69x = 40,205,506.86
  5. Step 5: Solve for x
    x = 40,205,506.86/5,725.69
  6. Step 6: Final answer
    x = 7,021.95

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.