Home / 8,115.52-12,173.46-2,921.44

Finding the Fourth Proportional to 8,115.52, 12,173.46 and 2,921.44

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Solution

The fourth proportional to 8,115.52, 12,173.46 and 2,921.44 is: 4,382.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.52 : 12,173.46 = 2,921.44 : x
  2. Step 2: Convert to fraction form
    8,115.52/12,173.46 = 2,921.44/x
  3. Step 3: Cross multiply
    8,115.52x = 12,173.46 × 2,921.44
  4. Step 4: Simplify right side
    8,115.52x = 35,564,032.98
  5. Step 5: Solve for x
    x = 35,564,032.98/8,115.52
  6. Step 6: Final answer
    x = 4,382.22

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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.