Home / 3,386.92-5,082.78-2,155.24

Finding the Fourth Proportional to 3,386.92, 5,082.78 and 2,155.24

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Solution

The fourth proportional to 3,386.92, 5,082.78 and 2,155.24 is: 3,234.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.92 : 5,082.78 = 2,155.24 : x
  2. Step 2: Convert to fraction form
    3,386.92/5,082.78 = 2,155.24/x
  3. Step 3: Cross multiply
    3,386.92x = 5,082.78 × 2,155.24
  4. Step 4: Simplify right side
    3,386.92x = 10,954,610.77
  5. Step 5: Solve for x
    x = 10,954,610.77/3,386.92
  6. Step 6: Final answer
    x = 3,234.39

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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.