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Finding the Third Proportional to 1,491 and 2,907

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Solution

The third proportional to 1,491 and 2,907 is: 5,667.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491 : 2,907 = 2,907 : x
  2. Step 2: Convert to fraction form
    1,491/2,907 = 2,907/x
  3. Step 3: Cross multiply
    1,491x = 2,907 × 2,907
  4. Step 4: Simplify right side
    1,491x = 8,450,649
  5. Step 5: Solve for x
    x = 8,450,649/1,491
  6. Step 6: Final answer
    x = 5,667.77

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.