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Finding the Third Proportional to 1,389.66 and 2,027.53

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Solution

The third proportional to 1,389.66 and 2,027.53 is: 2,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.66 : 2,027.53 = 2,027.53 : x
  2. Step 2: Convert to fraction form
    1,389.66/2,027.53 = 2,027.53/x
  3. Step 3: Cross multiply
    1,389.66x = 2,027.53 × 2,027.53
  4. Step 4: Simplify right side
    1,389.66x = 4,110,882.97
  5. Step 5: Solve for x
    x = 4,110,882.97/1,389.66
  6. Step 6: Final answer
    x = 2,958.20

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.