Home / 8,121.96-12,184.29-3,188.97

Finding the Fourth Proportional to 8,121.96, 12,184.29 and 3,188.97

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Solution

The fourth proportional to 8,121.96, 12,184.29 and 3,188.97 is: 4,783.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.96 : 12,184.29 = 3,188.97 : x
  2. Step 2: Convert to fraction form
    8,121.96/12,184.29 = 3,188.97/x
  3. Step 3: Cross multiply
    8,121.96x = 12,184.29 × 3,188.97
  4. Step 4: Simplify right side
    8,121.96x = 38,855,335.28
  5. Step 5: Solve for x
    x = 38,855,335.28/8,121.96
  6. Step 6: Final answer
    x = 4,783.99

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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.