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Finding the Third Proportional to 1,415.81 and 3,000.38

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Solution

The third proportional to 1,415.81 and 3,000.38 is: 6,358.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.81 : 3,000.38 = 3,000.38 : x
  2. Step 2: Convert to fraction form
    1,415.81/3,000.38 = 3,000.38/x
  3. Step 3: Cross multiply
    1,415.81x = 3,000.38 × 3,000.38
  4. Step 4: Simplify right side
    1,415.81x = 9,002,250.14
  5. Step 5: Solve for x
    x = 9,002,250.14/1,415.81
  6. Step 6: Final answer
    x = 6,358.36

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.