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Finding the Third Proportional to 1,491.75 and 3,281.75

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Solution

The third proportional to 1,491.75 and 3,281.75 is: 7,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.75 : 3,281.75 = 3,281.75 : x
  2. Step 2: Convert to fraction form
    1,491.75/3,281.75 = 3,281.75/x
  3. Step 3: Cross multiply
    1,491.75x = 3,281.75 × 3,281.75
  4. Step 4: Simplify right side
    1,491.75x = 10,769,883.06
  5. Step 5: Solve for x
    x = 10,769,883.06/1,491.75
  6. Step 6: Final answer
    x = 7,219.63

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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.