Home / 3,028.92-4,182.42-1,911.72

Finding the Fourth Proportional to 3,028.92, 4,182.42 and 1,911.72

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Solution

The fourth proportional to 3,028.92, 4,182.42 and 1,911.72 is: 2,639.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,028.92 : 4,182.42 = 1,911.72 : x
  2. Step 2: Convert to fraction form
    3,028.92/4,182.42 = 1,911.72/x
  3. Step 3: Cross multiply
    3,028.92x = 4,182.42 × 1,911.72
  4. Step 4: Simplify right side
    3,028.92x = 7,995,615.96
  5. Step 5: Solve for x
    x = 7,995,615.96/3,028.92
  6. Step 6: Final answer
    x = 2,639.76

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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.