Home / 8,138.27-12,206.74-2,591.39

Finding the Fourth Proportional to 8,138.27, 12,206.74 and 2,591.39

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Solution

The fourth proportional to 8,138.27, 12,206.74 and 2,591.39 is: 3,886.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.27 : 12,206.74 = 2,591.39 : x
  2. Step 2: Convert to fraction form
    8,138.27/12,206.74 = 2,591.39/x
  3. Step 3: Cross multiply
    8,138.27x = 12,206.74 × 2,591.39
  4. Step 4: Simplify right side
    8,138.27x = 31,632,411.01
  5. Step 5: Solve for x
    x = 31,632,411.01/8,138.27
  6. Step 6: Final answer
    x = 3,886.87

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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.