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Finding the Third Proportional to 2,261.81 and 2,980.97

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Solution

The third proportional to 2,261.81 and 2,980.97 is: 3,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.81 : 2,980.97 = 2,980.97 : x
  2. Step 2: Convert to fraction form
    2,261.81/2,980.97 = 2,980.97/x
  3. Step 3: Cross multiply
    2,261.81x = 2,980.97 × 2,980.97
  4. Step 4: Simplify right side
    2,261.81x = 8,886,174.69
  5. Step 5: Solve for x
    x = 8,886,174.69/2,261.81
  6. Step 6: Final answer
    x = 3,928.78

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.