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Finding the Third Proportional to 1,389.66 and 2,004.75

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Solution

The third proportional to 1,389.66 and 2,004.75 is: 2,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.66 : 2,004.75 = 2,004.75 : x
  2. Step 2: Convert to fraction form
    1,389.66/2,004.75 = 2,004.75/x
  3. Step 3: Cross multiply
    1,389.66x = 2,004.75 × 2,004.75
  4. Step 4: Simplify right side
    1,389.66x = 4,019,022.56
  5. Step 5: Solve for x
    x = 4,019,022.56/1,389.66
  6. Step 6: Final answer
    x = 2,892.10

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.