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Finding the Third Proportional to 2,788 and 7,564

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Solution

The third proportional to 2,788 and 7,564 is: 20,521.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788 : 7,564 = 7,564 : x
  2. Step 2: Convert to fraction form
    2,788/7,564 = 7,564/x
  3. Step 3: Cross multiply
    2,788x = 7,564 × 7,564
  4. Step 4: Simplify right side
    2,788x = 57,214,096
  5. Step 5: Solve for x
    x = 57,214,096/2,788
  6. Step 6: Final answer
    x = 20,521.56

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Why These Related Problems?

These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.