Home / 8,212.33-12,318.68-2,947.69

Finding the Fourth Proportional to 8,212.33, 12,318.68 and 2,947.69

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Solution

The fourth proportional to 8,212.33, 12,318.68 and 2,947.69 is: 4,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.33 : 12,318.68 = 2,947.69 : x
  2. Step 2: Convert to fraction form
    8,212.33/12,318.68 = 2,947.69/x
  3. Step 3: Cross multiply
    8,212.33x = 12,318.68 × 2,947.69
  4. Step 4: Simplify right side
    8,212.33x = 36,311,649.85
  5. Step 5: Solve for x
    x = 36,311,649.85/8,212.33
  6. Step 6: Final answer
    x = 4,421.60

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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.