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Finding the Third Proportional to 7,760 and 19,032

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Solution

The third proportional to 7,760 and 19,032 is: 46,677.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,760 : 19,032 = 19,032 : x
  2. Step 2: Convert to fraction form
    7,760/19,032 = 19,032/x
  3. Step 3: Cross multiply
    7,760x = 19,032 × 19,032
  4. Step 4: Simplify right side
    7,760x = 362,217,024
  5. Step 5: Solve for x
    x = 362,217,024/7,760
  6. Step 6: Final answer
    x = 46,677.45

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Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.