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Finding the Third Proportional to 7,130 and 8,714

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Solution

The third proportional to 7,130 and 8,714 is: 10,649.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130 : 8,714 = 8,714 : x
  2. Step 2: Convert to fraction form
    7,130/8,714 = 8,714/x
  3. Step 3: Cross multiply
    7,130x = 8,714 × 8,714
  4. Step 4: Simplify right side
    7,130x = 75,933,796
  5. Step 5: Solve for x
    x = 75,933,796/7,130
  6. Step 6: Final answer
    x = 10,649.90

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.