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Finding the Third Proportional to 1,369.20 and 2,051.47

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Solution

The third proportional to 1,369.20 and 2,051.47 is: 3,073.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.20 : 2,051.47 = 2,051.47 : x
  2. Step 2: Convert to fraction form
    1,369.20/2,051.47 = 2,051.47/x
  3. Step 3: Cross multiply
    1,369.20x = 2,051.47 × 2,051.47
  4. Step 4: Simplify right side
    1,369.20x = 4,208,540.06
  5. Step 5: Solve for x
    x = 4,208,540.06/1,369.20
  6. Step 6: Final answer
    x = 3,073.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.