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Finding the Third Proportional to 2,776 and 4,985

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Solution

The third proportional to 2,776 and 4,985 is: 8,951.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776 : 4,985 = 4,985 : x
  2. Step 2: Convert to fraction form
    2,776/4,985 = 4,985/x
  3. Step 3: Cross multiply
    2,776x = 4,985 × 4,985
  4. Step 4: Simplify right side
    2,776x = 24,850,225
  5. Step 5: Solve for x
    x = 24,850,225/2,776
  6. Step 6: Final answer
    x = 8,951.81

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Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.