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Finding the Third Proportional to 4,890 and 8,307

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Solution

The third proportional to 4,890 and 8,307 is: 14,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890 : 8,307 = 8,307 : x
  2. Step 2: Convert to fraction form
    4,890/8,307 = 8,307/x
  3. Step 3: Cross multiply
    4,890x = 8,307 × 8,307
  4. Step 4: Simplify right side
    4,890x = 69,006,249
  5. Step 5: Solve for x
    x = 69,006,249/4,890
  6. Step 6: Final answer
    x = 14,111.71

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.