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Finding the Third Proportional to 2,789.63 and 4,485.19

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Solution

The third proportional to 2,789.63 and 4,485.19 is: 7,211.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.63 : 4,485.19 = 4,485.19 : x
  2. Step 2: Convert to fraction form
    2,789.63/4,485.19 = 4,485.19/x
  3. Step 3: Cross multiply
    2,789.63x = 4,485.19 × 4,485.19
  4. Step 4: Simplify right side
    2,789.63x = 20,116,906.91
  5. Step 5: Solve for x
    x = 20,116,906.91/2,789.63
  6. Step 6: Final answer
    x = 7,211.33

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.