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Finding the Third Proportional to 1,775.63 and 3,939.38

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Solution

The third proportional to 1,775.63 and 3,939.38 is: 8,739.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.63 : 3,939.38 = 3,939.38 : x
  2. Step 2: Convert to fraction form
    1,775.63/3,939.38 = 3,939.38/x
  3. Step 3: Cross multiply
    1,775.63x = 3,939.38 × 3,939.38
  4. Step 4: Simplify right side
    1,775.63x = 15,518,675.39
  5. Step 5: Solve for x
    x = 15,518,675.39/1,775.63
  6. Step 6: Final answer
    x = 8,739.84

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.