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Finding the Third Proportional to 5,980 and 8,778

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Solution

The third proportional to 5,980 and 8,778 is: 12,885.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,980 : 8,778 = 8,778 : x
  2. Step 2: Convert to fraction form
    5,980/8,778 = 8,778/x
  3. Step 3: Cross multiply
    5,980x = 8,778 × 8,778
  4. Step 4: Simplify right side
    5,980x = 77,053,284
  5. Step 5: Solve for x
    x = 77,053,284/5,980
  6. Step 6: Final answer
    x = 12,885.16

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.