Home / 3,183.08-4,770.78-1,128.68

Finding the Fourth Proportional to 3,183.08, 4,770.78 and 1,128.68

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Solution

The fourth proportional to 3,183.08, 4,770.78 and 1,128.68 is: 1,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.08 : 4,770.78 = 1,128.68 : x
  2. Step 2: Convert to fraction form
    3,183.08/4,770.78 = 1,128.68/x
  3. Step 3: Cross multiply
    3,183.08x = 4,770.78 × 1,128.68
  4. Step 4: Simplify right side
    3,183.08x = 5,384,683.97
  5. Step 5: Solve for x
    x = 5,384,683.97/3,183.08
  6. Step 6: Final answer
    x = 1,691.66

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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.