Home / 8,400.45-12,600.17-3,719.09

Finding the Fourth Proportional to 8,400.45, 12,600.17 and 3,719.09

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Solution

The fourth proportional to 8,400.45, 12,600.17 and 3,719.09 is: 5,578.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.45 : 12,600.17 = 3,719.09 : x
  2. Step 2: Convert to fraction form
    8,400.45/12,600.17 = 3,719.09/x
  3. Step 3: Cross multiply
    8,400.45x = 12,600.17 × 3,719.09
  4. Step 4: Simplify right side
    8,400.45x = 46,861,179.15
  5. Step 5: Solve for x
    x = 46,861,179.15/8,400.45
  6. Step 6: Final answer
    x = 5,578.41

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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.