Home / 8,117.94-12,183.81-3,191.02

Finding the Fourth Proportional to 8,117.94, 12,183.81 and 3,191.02

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Solution

The fourth proportional to 8,117.94, 12,183.81 and 3,191.02 is: 4,789.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.94 : 12,183.81 = 3,191.02 : x
  2. Step 2: Convert to fraction form
    8,117.94/12,183.81 = 3,191.02/x
  3. Step 3: Cross multiply
    8,117.94x = 12,183.81 × 3,191.02
  4. Step 4: Simplify right side
    8,117.94x = 38,878,781.39
  5. Step 5: Solve for x
    x = 38,878,781.39/8,117.94
  6. Step 6: Final answer
    x = 4,789.24

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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.