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Finding the Third Proportional to 1,517.63 and 3,125.81

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Solution

The third proportional to 1,517.63 and 3,125.81 is: 6,438.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.63 : 3,125.81 = 3,125.81 : x
  2. Step 2: Convert to fraction form
    1,517.63/3,125.81 = 3,125.81/x
  3. Step 3: Cross multiply
    1,517.63x = 3,125.81 × 3,125.81
  4. Step 4: Simplify right side
    1,517.63x = 9,770,703.79
  5. Step 5: Solve for x
    x = 9,770,703.79/1,517.63
  6. Step 6: Final answer
    x = 6,438.15

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.