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Finding the Third Proportional to 1,680.50 and 2,612.75

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Solution

The third proportional to 1,680.50 and 2,612.75 is: 4,062.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.50 : 2,612.75 = 2,612.75 : x
  2. Step 2: Convert to fraction form
    1,680.50/2,612.75 = 2,612.75/x
  3. Step 3: Cross multiply
    1,680.50x = 2,612.75 × 2,612.75
  4. Step 4: Simplify right side
    1,680.50x = 6,826,462.56
  5. Step 5: Solve for x
    x = 6,826,462.56/1,680.50
  6. Step 6: Final answer
    x = 4,062.16

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.