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Finding the Third Proportional to 1,639.13 and 2,397.38

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Solution

The third proportional to 1,639.13 and 2,397.38 is: 3,506.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.13 : 2,397.38 = 2,397.38 : x
  2. Step 2: Convert to fraction form
    1,639.13/2,397.38 = 2,397.38/x
  3. Step 3: Cross multiply
    1,639.13x = 2,397.38 × 2,397.38
  4. Step 4: Simplify right side
    1,639.13x = 5,747,406.89
  5. Step 5: Solve for x
    x = 5,747,406.89/1,639.13
  6. Step 6: Final answer
    x = 3,506.39

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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.