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Finding the Third Proportional to 2,124 and 4,911.75

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Solution

The third proportional to 2,124 and 4,911.75 is: 11,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124 : 4,911.75 = 4,911.75 : x
  2. Step 2: Convert to fraction form
    2,124/4,911.75 = 4,911.75/x
  3. Step 3: Cross multiply
    2,124x = 4,911.75 × 4,911.75
  4. Step 4: Simplify right side
    2,124x = 24,125,288.06
  5. Step 5: Solve for x
    x = 24,125,288.06/2,124
  6. Step 6: Final answer
    x = 11,358.42

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.