Home / 8,221.25-12,330.36-2,672.96

Finding the Fourth Proportional to 8,221.25, 12,330.36 and 2,672.96

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Solution

The fourth proportional to 8,221.25, 12,330.36 and 2,672.96 is: 4,008.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.25 : 12,330.36 = 2,672.96 : x
  2. Step 2: Convert to fraction form
    8,221.25/12,330.36 = 2,672.96/x
  3. Step 3: Cross multiply
    8,221.25x = 12,330.36 × 2,672.96
  4. Step 4: Simplify right side
    8,221.25x = 32,958,497.41
  5. Step 5: Solve for x
    x = 32,958,497.41/8,221.25
  6. Step 6: Final answer
    x = 4,008.94

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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.