Home / 8,122.05-12,171.96-3,953.79

Finding the Fourth Proportional to 8,122.05, 12,171.96 and 3,953.79

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Solution

The fourth proportional to 8,122.05, 12,171.96 and 3,953.79 is: 5,925.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.05 : 12,171.96 = 3,953.79 : x
  2. Step 2: Convert to fraction form
    8,122.05/12,171.96 = 3,953.79/x
  3. Step 3: Cross multiply
    8,122.05x = 12,171.96 × 3,953.79
  4. Step 4: Simplify right side
    8,122.05x = 48,125,373.73
  5. Step 5: Solve for x
    x = 48,125,373.73/8,122.05
  6. Step 6: Final answer
    x = 5,925.27

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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.