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Finding the Third Proportional to 2,915 and 6,124

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Solution

The third proportional to 2,915 and 6,124 is: 12,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915 : 6,124 = 6,124 : x
  2. Step 2: Convert to fraction form
    2,915/6,124 = 6,124/x
  3. Step 3: Cross multiply
    2,915x = 6,124 × 6,124
  4. Step 4: Simplify right side
    2,915x = 37,503,376
  5. Step 5: Solve for x
    x = 37,503,376/2,915
  6. Step 6: Final answer
    x = 12,865.65

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.