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Finding the Third Proportional to 1,990.69 and 3,723.19

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Solution

The third proportional to 1,990.69 and 3,723.19 is: 6,963.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.69 : 3,723.19 = 3,723.19 : x
  2. Step 2: Convert to fraction form
    1,990.69/3,723.19 = 3,723.19/x
  3. Step 3: Cross multiply
    1,990.69x = 3,723.19 × 3,723.19
  4. Step 4: Simplify right side
    1,990.69x = 13,862,125.16
  5. Step 5: Solve for x
    x = 13,862,125.16/1,990.69
  6. Step 6: Final answer
    x = 6,963.49

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.