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Finding the Third Proportional to 1,189.13 and 2,261.81

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Solution

The third proportional to 1,189.13 and 2,261.81 is: 4,302.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189.13 : 2,261.81 = 2,261.81 : x
  2. Step 2: Convert to fraction form
    1,189.13/2,261.81 = 2,261.81/x
  3. Step 3: Cross multiply
    1,189.13x = 2,261.81 × 2,261.81
  4. Step 4: Simplify right side
    1,189.13x = 5,115,795.79
  5. Step 5: Solve for x
    x = 5,115,795.79/1,189.13
  6. Step 6: Final answer
    x = 4,302.15

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.