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Finding the Third Proportional to 1,938.09 and 4,228.03

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Solution

The third proportional to 1,938.09 and 4,228.03 is: 9,223.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.09 : 4,228.03 = 4,228.03 : x
  2. Step 2: Convert to fraction form
    1,938.09/4,228.03 = 4,228.03/x
  3. Step 3: Cross multiply
    1,938.09x = 4,228.03 × 4,228.03
  4. Step 4: Simplify right side
    1,938.09x = 17,876,248.25
  5. Step 5: Solve for x
    x = 17,876,248.25/1,938.09
  6. Step 6: Final answer
    x = 9,223.62

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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.