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Finding the Third Proportional to 2,308.63 and 3,138.94

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Solution

The third proportional to 2,308.63 and 3,138.94 is: 4,267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,308.63 : 3,138.94 = 3,138.94 : x
  2. Step 2: Convert to fraction form
    2,308.63/3,138.94 = 3,138.94/x
  3. Step 3: Cross multiply
    2,308.63x = 3,138.94 × 3,138.94
  4. Step 4: Simplify right side
    2,308.63x = 9,852,928.63
  5. Step 5: Solve for x
    x = 9,852,928.63/2,308.63
  6. Step 6: Final answer
    x = 4,267.88

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.