Home / 8,172.09-12,256.92-2,976.75

Finding the Fourth Proportional to 8,172.09, 12,256.92 and 2,976.75

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Solution

The fourth proportional to 8,172.09, 12,256.92 and 2,976.75 is: 4,464.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.09 : 12,256.92 = 2,976.75 : x
  2. Step 2: Convert to fraction form
    8,172.09/12,256.92 = 2,976.75/x
  3. Step 3: Cross multiply
    8,172.09x = 12,256.92 × 2,976.75
  4. Step 4: Simplify right side
    8,172.09x = 36,485,786.61
  5. Step 5: Solve for x
    x = 36,485,786.61/8,172.09
  6. Step 6: Final answer
    x = 4,464.68

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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.