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Finding the Third Proportional to 2,808 and 4,478

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Solution

The third proportional to 2,808 and 4,478 is: 7,141.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808 : 4,478 = 4,478 : x
  2. Step 2: Convert to fraction form
    2,808/4,478 = 4,478/x
  3. Step 3: Cross multiply
    2,808x = 4,478 × 4,478
  4. Step 4: Simplify right side
    2,808x = 20,052,484
  5. Step 5: Solve for x
    x = 20,052,484/2,808
  6. Step 6: Final answer
    x = 7,141.20

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.