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Finding the Third Proportional to 2,778.75 and 3,631.13

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Solution

The third proportional to 2,778.75 and 3,631.13 is: 4,744.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.75 : 3,631.13 = 3,631.13 : x
  2. Step 2: Convert to fraction form
    2,778.75/3,631.13 = 3,631.13/x
  3. Step 3: Cross multiply
    2,778.75x = 3,631.13 × 3,631.13
  4. Step 4: Simplify right side
    2,778.75x = 13,185,068.77
  5. Step 5: Solve for x
    x = 13,185,068.77/2,778.75
  6. Step 6: Final answer
    x = 4,744.96

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.