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Finding the Third Proportional to 7,998 and 12,777

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Solution

The third proportional to 7,998 and 12,777 is: 20,411.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998 : 12,777 = 12,777 : x
  2. Step 2: Convert to fraction form
    7,998/12,777 = 12,777/x
  3. Step 3: Cross multiply
    7,998x = 12,777 × 12,777
  4. Step 4: Simplify right side
    7,998x = 163,251,729
  5. Step 5: Solve for x
    x = 163,251,729/7,998
  6. Step 6: Final answer
    x = 20,411.57

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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.