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Finding the Third Proportional to 901.69 and 1,980.84

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Solution

The third proportional to 901.69 and 1,980.84 is: 4,351.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.69 : 1,980.84 = 1,980.84 : x
  2. Step 2: Convert to fraction form
    901.69/1,980.84 = 1,980.84/x
  3. Step 3: Cross multiply
    901.69x = 1,980.84 × 1,980.84
  4. Step 4: Simplify right side
    901.69x = 3,923,741.96
  5. Step 5: Solve for x
    x = 3,923,741.96/901.69
  6. Step 6: Final answer
    x = 4,351.55

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.