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Finding the Fourth Proportional to 6,871.01, 10,305.34 and 1,939.49

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Solution

The fourth proportional to 6,871.01, 10,305.34 and 1,939.49 is: 2,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,871.01 : 10,305.34 = 1,939.49 : x
  2. Step 2: Convert to fraction form
    6,871.01/10,305.34 = 1,939.49/x
  3. Step 3: Cross multiply
    6,871.01x = 10,305.34 × 1,939.49
  4. Step 4: Simplify right side
    6,871.01x = 19,987,086.15
  5. Step 5: Solve for x
    x = 19,987,086.15/6,871.01
  6. Step 6: Final answer
    x = 2,908.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.