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Finding the Third Proportional to 842.50 and 1,847

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Solution

The third proportional to 842.50 and 1,847 is: 4,049.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    842.50 : 1,847 = 1,847 : x
  2. Step 2: Convert to fraction form
    842.50/1,847 = 1,847/x
  3. Step 3: Cross multiply
    842.50x = 1,847 × 1,847
  4. Step 4: Simplify right side
    842.50x = 3,411,409
  5. Step 5: Solve for x
    x = 3,411,409/842.50
  6. Step 6: Final answer
    x = 4,049.15

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.