Home / 8,005.50-12,006.39-2,162.55

Finding the Fourth Proportional to 8,005.50, 12,006.39 and 2,162.55

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Solution

The fourth proportional to 8,005.50, 12,006.39 and 2,162.55 is: 3,243.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.50 : 12,006.39 = 2,162.55 : x
  2. Step 2: Convert to fraction form
    8,005.50/12,006.39 = 2,162.55/x
  3. Step 3: Cross multiply
    8,005.50x = 12,006.39 × 2,162.55
  4. Step 4: Simplify right side
    8,005.50x = 25,964,418.69
  5. Step 5: Solve for x
    x = 25,964,418.69/8,005.50
  6. Step 6: Final answer
    x = 3,243.32

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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.