Home / 8,130.94-12,198.12-2,865.74

Finding the Fourth Proportional to 8,130.94, 12,198.12 and 2,865.74

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Solution

The fourth proportional to 8,130.94, 12,198.12 and 2,865.74 is: 4,299.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.94 : 12,198.12 = 2,865.74 : x
  2. Step 2: Convert to fraction form
    8,130.94/12,198.12 = 2,865.74/x
  3. Step 3: Cross multiply
    8,130.94x = 12,198.12 × 2,865.74
  4. Step 4: Simplify right side
    8,130.94x = 34,956,640.41
  5. Step 5: Solve for x
    x = 34,956,640.41/8,130.94
  6. Step 6: Final answer
    x = 4,299.21

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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.