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Finding the Third Proportional to 1,370.67 and 2,912.20

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Solution

The third proportional to 1,370.67 and 2,912.20 is: 6,187.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.67 : 2,912.20 = 2,912.20 : x
  2. Step 2: Convert to fraction form
    1,370.67/2,912.20 = 2,912.20/x
  3. Step 3: Cross multiply
    1,370.67x = 2,912.20 × 2,912.20
  4. Step 4: Simplify right side
    1,370.67x = 8,480,927.04
  5. Step 5: Solve for x
    x = 8,480,927.04/1,370.67
  6. Step 6: Final answer
    x = 6,187.42

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.