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Finding the Fourth Proportional to 5,871.89, 8,103.11 and 3,219.28

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Solution

The fourth proportional to 5,871.89, 8,103.11 and 3,219.28 is: 4,442.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,871.89 : 8,103.11 = 3,219.28 : x
  2. Step 2: Convert to fraction form
    5,871.89/8,103.11 = 3,219.28/x
  3. Step 3: Cross multiply
    5,871.89x = 8,103.11 × 3,219.28
  4. Step 4: Simplify right side
    5,871.89x = 26,086,143.61
  5. Step 5: Solve for x
    x = 26,086,143.61/5,871.89
  6. Step 6: Final answer
    x = 4,442.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.