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Finding the Third Proportional to 3,994 and 6,380

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Solution

The third proportional to 3,994 and 6,380 is: 10,191.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994 : 6,380 = 6,380 : x
  2. Step 2: Convert to fraction form
    3,994/6,380 = 6,380/x
  3. Step 3: Cross multiply
    3,994x = 6,380 × 6,380
  4. Step 4: Simplify right side
    3,994x = 40,704,400
  5. Step 5: Solve for x
    x = 40,704,400/3,994
  6. Step 6: Final answer
    x = 10,191.39

Related Problems

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.