Home / 8,119.94-12,181.72-2,572.84

Finding the Fourth Proportional to 8,119.94, 12,181.72 and 2,572.84

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Solution

The fourth proportional to 8,119.94, 12,181.72 and 2,572.84 is: 3,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.94 : 12,181.72 = 2,572.84 : x
  2. Step 2: Convert to fraction form
    8,119.94/12,181.72 = 2,572.84/x
  3. Step 3: Cross multiply
    8,119.94x = 12,181.72 × 2,572.84
  4. Step 4: Simplify right side
    8,119.94x = 31,341,616.48
  5. Step 5: Solve for x
    x = 31,341,616.48/8,119.94
  6. Step 6: Final answer
    x = 3,859.83

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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.