Home / 8,131.68-12,186.54-4,228.20

Finding the Fourth Proportional to 8,131.68, 12,186.54 and 4,228.20

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Solution

The fourth proportional to 8,131.68, 12,186.54 and 4,228.20 is: 6,336.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.68 : 12,186.54 = 4,228.20 : x
  2. Step 2: Convert to fraction form
    8,131.68/12,186.54 = 4,228.20/x
  3. Step 3: Cross multiply
    8,131.68x = 12,186.54 × 4,228.20
  4. Step 4: Simplify right side
    8,131.68x = 51,527,128.43
  5. Step 5: Solve for x
    x = 51,527,128.43/8,131.68
  6. Step 6: Final answer
    x = 6,336.59

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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.