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Finding the Fourth Proportional to 8,103.94, 12,155.91 and 2,631.94

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Solution

The fourth proportional to 8,103.94, 12,155.91 and 2,631.94 is: 3,947.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.94 : 12,155.91 = 2,631.94 : x
  2. Step 2: Convert to fraction form
    8,103.94/12,155.91 = 2,631.94/x
  3. Step 3: Cross multiply
    8,103.94x = 12,155.91 × 2,631.94
  4. Step 4: Simplify right side
    8,103.94x = 31,993,625.77
  5. Step 5: Solve for x
    x = 31,993,625.77/8,103.94
  6. Step 6: Final answer
    x = 3,947.91

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Similar ratio
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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.