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Finding the Fourth Proportional to 6,871.91, 10,308.21 and 1,941.90

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Solution

The fourth proportional to 6,871.91, 10,308.21 and 1,941.90 is: 2,912.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,871.91 : 10,308.21 = 1,941.90 : x
  2. Step 2: Convert to fraction form
    6,871.91/10,308.21 = 1,941.90/x
  3. Step 3: Cross multiply
    6,871.91x = 10,308.21 × 1,941.90
  4. Step 4: Simplify right side
    6,871.91x = 20,017,513.00
  5. Step 5: Solve for x
    x = 20,017,513.00/6,871.91
  6. Step 6: Final answer
    x = 2,912.95

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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.