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Finding the Third Proportional to 7,818 and 9,909

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Solution

The third proportional to 7,818 and 9,909 is: 12,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818 : 9,909 = 9,909 : x
  2. Step 2: Convert to fraction form
    7,818/9,909 = 9,909/x
  3. Step 3: Cross multiply
    7,818x = 9,909 × 9,909
  4. Step 4: Simplify right side
    7,818x = 98,188,281
  5. Step 5: Solve for x
    x = 98,188,281/7,818
  6. Step 6: Final answer
    x = 12,559.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.