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Finding the Third Proportional to 6,642 and 8,980.88

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Solution

The third proportional to 6,642 and 8,980.88 is: 12,143.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642 : 8,980.88 = 8,980.88 : x
  2. Step 2: Convert to fraction form
    6,642/8,980.88 = 8,980.88/x
  3. Step 3: Cross multiply
    6,642x = 8,980.88 × 8,980.88
  4. Step 4: Simplify right side
    6,642x = 80,656,115.77
  5. Step 5: Solve for x
    x = 80,656,115.77/6,642
  6. Step 6: Final answer
    x = 12,143.35

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.