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Finding the Third Proportional to 4,190 and 6,521

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Solution

The third proportional to 4,190 and 6,521 is: 10,148.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190 : 6,521 = 6,521 : x
  2. Step 2: Convert to fraction form
    4,190/6,521 = 6,521/x
  3. Step 3: Cross multiply
    4,190x = 6,521 × 6,521
  4. Step 4: Simplify right side
    4,190x = 42,523,441
  5. Step 5: Solve for x
    x = 42,523,441/4,190
  6. Step 6: Final answer
    x = 10,148.79

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.