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Finding the Third Proportional to 2,220.54 and 4,782.80

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Solution

The third proportional to 2,220.54 and 4,782.80 is: 10,301.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.54 : 4,782.80 = 4,782.80 : x
  2. Step 2: Convert to fraction form
    2,220.54/4,782.80 = 4,782.80/x
  3. Step 3: Cross multiply
    2,220.54x = 4,782.80 × 4,782.80
  4. Step 4: Simplify right side
    2,220.54x = 22,875,145.95
  5. Step 5: Solve for x
    x = 22,875,145.95/2,220.54
  6. Step 6: Final answer
    x = 10,301.62

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.