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Finding the Fourth Proportional to 6,381.85, 8,806.44 and 3,728.97

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Solution

The fourth proportional to 6,381.85, 8,806.44 and 3,728.97 is: 5,145.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.85 : 8,806.44 = 3,728.97 : x
  2. Step 2: Convert to fraction form
    6,381.85/8,806.44 = 3,728.97/x
  3. Step 3: Cross multiply
    6,381.85x = 8,806.44 × 3,728.97
  4. Step 4: Simplify right side
    6,381.85x = 32,838,950.57
  5. Step 5: Solve for x
    x = 32,838,950.57/6,381.85
  6. Step 6: Final answer
    x = 5,145.68

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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.