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Finding the Third Proportional to 4,350 and 4,990

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Solution

The third proportional to 4,350 and 4,990 is: 5,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,350 : 4,990 = 4,990 : x
  2. Step 2: Convert to fraction form
    4,350/4,990 = 4,990/x
  3. Step 3: Cross multiply
    4,350x = 4,990 × 4,990
  4. Step 4: Simplify right side
    4,350x = 24,900,100
  5. Step 5: Solve for x
    x = 24,900,100/4,350
  6. Step 6: Final answer
    x = 5,724.16

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.