Home / 8,005.15-12,006.78-2,162.22

Finding the Fourth Proportional to 8,005.15, 12,006.78 and 2,162.22

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Solution

The fourth proportional to 8,005.15, 12,006.78 and 2,162.22 is: 3,243.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.15 : 12,006.78 = 2,162.22 : x
  2. Step 2: Convert to fraction form
    8,005.15/12,006.78 = 2,162.22/x
  3. Step 3: Cross multiply
    8,005.15x = 12,006.78 × 2,162.22
  4. Step 4: Simplify right side
    8,005.15x = 25,961,299.85
  5. Step 5: Solve for x
    x = 25,961,299.85/8,005.15
  6. Step 6: Final answer
    x = 3,243.07

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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.