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Finding the Third Proportional to 889 and 1,938.25

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Solution

The third proportional to 889 and 1,938.25 is: 4,225.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    889 : 1,938.25 = 1,938.25 : x
  2. Step 2: Convert to fraction form
    889/1,938.25 = 1,938.25/x
  3. Step 3: Cross multiply
    889x = 1,938.25 × 1,938.25
  4. Step 4: Simplify right side
    889x = 3,756,813.06
  5. Step 5: Solve for x
    x = 3,756,813.06/889
  6. Step 6: Final answer
    x = 4,225.89

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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.