Home / 3,031.70-4,183.38-2,147.76

Finding the Fourth Proportional to 3,031.70, 4,183.38 and 2,147.76

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Solution

The fourth proportional to 3,031.70, 4,183.38 and 2,147.76 is: 2,963.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.70 : 4,183.38 = 2,147.76 : x
  2. Step 2: Convert to fraction form
    3,031.70/4,183.38 = 2,147.76/x
  3. Step 3: Cross multiply
    3,031.70x = 4,183.38 × 2,147.76
  4. Step 4: Simplify right side
    3,031.70x = 8,984,896.23
  5. Step 5: Solve for x
    x = 8,984,896.23/3,031.70
  6. Step 6: Final answer
    x = 2,963.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.