Home / 8,142.21-12,206.57-6,751.71

Finding the Fourth Proportional to 8,142.21, 12,206.57 and 6,751.71

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Solution

The fourth proportional to 8,142.21, 12,206.57 and 6,751.71 is: 10,121.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.21 : 12,206.57 = 6,751.71 : x
  2. Step 2: Convert to fraction form
    8,142.21/12,206.57 = 6,751.71/x
  3. Step 3: Cross multiply
    8,142.21x = 12,206.57 × 6,751.71
  4. Step 4: Simplify right side
    8,142.21x = 82,415,186.98
  5. Step 5: Solve for x
    x = 82,415,186.98/8,142.21
  6. Step 6: Final answer
    x = 10,121.97

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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.