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Finding the Third Proportional to 1,999.50 and 4,127.63

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Solution

The third proportional to 1,999.50 and 4,127.63 is: 8,520.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.50 : 4,127.63 = 4,127.63 : x
  2. Step 2: Convert to fraction form
    1,999.50/4,127.63 = 4,127.63/x
  3. Step 3: Cross multiply
    1,999.50x = 4,127.63 × 4,127.63
  4. Step 4: Simplify right side
    1,999.50x = 17,037,288.14
  5. Step 5: Solve for x
    x = 17,037,288.14/1,999.50
  6. Step 6: Final answer
    x = 8,520.77

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.