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Finding the Third Proportional to 2,887.88 and 3,156.75

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Solution

The third proportional to 2,887.88 and 3,156.75 is: 3,450.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.88 : 3,156.75 = 3,156.75 : x
  2. Step 2: Convert to fraction form
    2,887.88/3,156.75 = 3,156.75/x
  3. Step 3: Cross multiply
    2,887.88x = 3,156.75 × 3,156.75
  4. Step 4: Simplify right side
    2,887.88x = 9,965,070.56
  5. Step 5: Solve for x
    x = 9,965,070.56/2,887.88
  6. Step 6: Final answer
    x = 3,450.66

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.