Home / 8,128.46-12,192.52-3,745.92

Finding the Fourth Proportional to 8,128.46, 12,192.52 and 3,745.92

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Solution

The fourth proportional to 8,128.46, 12,192.52 and 3,745.92 is: 5,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.46 : 12,192.52 = 3,745.92 : x
  2. Step 2: Convert to fraction form
    8,128.46/12,192.52 = 3,745.92/x
  3. Step 3: Cross multiply
    8,128.46x = 12,192.52 × 3,745.92
  4. Step 4: Simplify right side
    8,128.46x = 45,672,224.14
  5. Step 5: Solve for x
    x = 45,672,224.14/8,128.46
  6. Step 6: Final answer
    x = 5,618.80

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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.