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Finding the Third Proportional to 7,758 and 15,708

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Solution

The third proportional to 7,758 and 15,708 is: 31,804.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758 : 15,708 = 15,708 : x
  2. Step 2: Convert to fraction form
    7,758/15,708 = 15,708/x
  3. Step 3: Cross multiply
    7,758x = 15,708 × 15,708
  4. Step 4: Simplify right side
    7,758x = 246,741,264
  5. Step 5: Solve for x
    x = 246,741,264/7,758
  6. Step 6: Final answer
    x = 31,804.75

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.