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Finding the Third Proportional to 3,690 and 8,028

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Solution

The third proportional to 3,690 and 8,028 is: 17,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690 : 8,028 = 8,028 : x
  2. Step 2: Convert to fraction form
    3,690/8,028 = 8,028/x
  3. Step 3: Cross multiply
    3,690x = 8,028 × 8,028
  4. Step 4: Simplify right side
    3,690x = 64,448,784
  5. Step 5: Solve for x
    x = 64,448,784/3,690
  6. Step 6: Final answer
    x = 17,465.80

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.