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Finding the Third Proportional to 1,216.25 and 1,887

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Solution

The third proportional to 1,216.25 and 1,887 is: 2,927.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.25 : 1,887 = 1,887 : x
  2. Step 2: Convert to fraction form
    1,216.25/1,887 = 1,887/x
  3. Step 3: Cross multiply
    1,216.25x = 1,887 × 1,887
  4. Step 4: Simplify right side
    1,216.25x = 3,560,769
  5. Step 5: Solve for x
    x = 3,560,769/1,216.25
  6. Step 6: Final answer
    x = 2,927.66

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.