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Finding the Fourth Proportional to 6,788.27, 9,372.39 and 4,239.92

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Solution

The fourth proportional to 6,788.27, 9,372.39 and 4,239.92 is: 5,853.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,788.27 : 9,372.39 = 4,239.92 : x
  2. Step 2: Convert to fraction form
    6,788.27/9,372.39 = 4,239.92/x
  3. Step 3: Cross multiply
    6,788.27x = 9,372.39 × 4,239.92
  4. Step 4: Simplify right side
    6,788.27x = 39,738,183.81
  5. Step 5: Solve for x
    x = 39,738,183.81/6,788.27
  6. Step 6: Final answer
    x = 5,853.95

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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.