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Finding the Third Proportional to 5,685.19 and 6,211.69

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Solution

The third proportional to 5,685.19 and 6,211.69 is: 6,786.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.19 : 6,211.69 = 6,211.69 : x
  2. Step 2: Convert to fraction form
    5,685.19/6,211.69 = 6,211.69/x
  3. Step 3: Cross multiply
    5,685.19x = 6,211.69 × 6,211.69
  4. Step 4: Simplify right side
    5,685.19x = 38,585,061.60
  5. Step 5: Solve for x
    x = 38,585,061.60/5,685.19
  6. Step 6: Final answer
    x = 6,786.95

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.