Home / 8,137.91-12,206.75-2,591.19

Finding the Fourth Proportional to 8,137.91, 12,206.75 and 2,591.19

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Solution

The fourth proportional to 8,137.91, 12,206.75 and 2,591.19 is: 3,886.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.91 : 12,206.75 = 2,591.19 : x
  2. Step 2: Convert to fraction form
    8,137.91/12,206.75 = 2,591.19/x
  3. Step 3: Cross multiply
    8,137.91x = 12,206.75 × 2,591.19
  4. Step 4: Simplify right side
    8,137.91x = 31,629,995.58
  5. Step 5: Solve for x
    x = 31,629,995.58/8,137.91
  6. Step 6: Final answer
    x = 3,886.75

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1.5x scale

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.