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Finding the Third Proportional to 1,665.56 and 2,509.73

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Solution

The third proportional to 1,665.56 and 2,509.73 is: 3,781.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.56 : 2,509.73 = 2,509.73 : x
  2. Step 2: Convert to fraction form
    1,665.56/2,509.73 = 2,509.73/x
  3. Step 3: Cross multiply
    1,665.56x = 2,509.73 × 2,509.73
  4. Step 4: Simplify right side
    1,665.56x = 6,298,766.63
  5. Step 5: Solve for x
    x = 6,298,766.63/1,665.56
  6. Step 6: Final answer
    x = 3,781.77

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.