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Finding the Third Proportional to 4,790 and 8,410

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Solution

The third proportional to 4,790 and 8,410 is: 14,765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,790 : 8,410 = 8,410 : x
  2. Step 2: Convert to fraction form
    4,790/8,410 = 8,410/x
  3. Step 3: Cross multiply
    4,790x = 8,410 × 8,410
  4. Step 4: Simplify right side
    4,790x = 70,728,100
  5. Step 5: Solve for x
    x = 70,728,100/4,790
  6. Step 6: Final answer
    x = 14,765.78

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.