Home / 8,286.39-11,439.45-6,393.72

Finding the Fourth Proportional to 8,286.39, 11,439.45 and 6,393.72

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Solution

The fourth proportional to 8,286.39, 11,439.45 and 6,393.72 is: 8,826.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.39 : 11,439.45 = 6,393.72 : x
  2. Step 2: Convert to fraction form
    8,286.39/11,439.45 = 6,393.72/x
  3. Step 3: Cross multiply
    8,286.39x = 11,439.45 × 6,393.72
  4. Step 4: Simplify right side
    8,286.39x = 73,140,640.25
  5. Step 5: Solve for x
    x = 73,140,640.25/8,286.39
  6. Step 6: Final answer
    x = 8,826.60

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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.