Home / 8,189.40-12,280.86-2,992.44

Finding the Fourth Proportional to 8,189.40, 12,280.86 and 2,992.44

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Solution

The fourth proportional to 8,189.40, 12,280.86 and 2,992.44 is: 4,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,189.40 : 12,280.86 = 2,992.44 : x
  2. Step 2: Convert to fraction form
    8,189.40/12,280.86 = 2,992.44/x
  3. Step 3: Cross multiply
    8,189.40x = 12,280.86 × 2,992.44
  4. Step 4: Simplify right side
    8,189.40x = 36,749,736.70
  5. Step 5: Solve for x
    x = 36,749,736.70/8,189.40
  6. Step 6: Final answer
    x = 4,487.48

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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.