Home / 8,119.78-12,179.53-2,573.11

Finding the Fourth Proportional to 8,119.78, 12,179.53 and 2,573.11

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Solution

The fourth proportional to 8,119.78, 12,179.53 and 2,573.11 is: 3,859.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.78 : 12,179.53 = 2,573.11 : x
  2. Step 2: Convert to fraction form
    8,119.78/12,179.53 = 2,573.11/x
  3. Step 3: Cross multiply
    8,119.78x = 12,179.53 × 2,573.11
  4. Step 4: Simplify right side
    8,119.78x = 31,339,270.44
  5. Step 5: Solve for x
    x = 31,339,270.44/8,119.78
  6. Step 6: Final answer
    x = 3,859.62

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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.