Home / 8,160.92-12,239.55-3,231.66

Finding the Fourth Proportional to 8,160.92, 12,239.55 and 3,231.66

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Solution

The fourth proportional to 8,160.92, 12,239.55 and 3,231.66 is: 4,846.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,160.92 : 12,239.55 = 3,231.66 : x
  2. Step 2: Convert to fraction form
    8,160.92/12,239.55 = 3,231.66/x
  3. Step 3: Cross multiply
    8,160.92x = 12,239.55 × 3,231.66
  4. Step 4: Simplify right side
    8,160.92x = 39,554,064.15
  5. Step 5: Solve for x
    x = 39,554,064.15/8,160.92
  6. Step 6: Final answer
    x = 4,846.77

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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.