Home / 3,155.11-4,351.32-2,407.75

Finding the Fourth Proportional to 3,155.11, 4,351.32 and 2,407.75

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Solution

The fourth proportional to 3,155.11, 4,351.32 and 2,407.75 is: 3,320.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.11 : 4,351.32 = 2,407.75 : x
  2. Step 2: Convert to fraction form
    3,155.11/4,351.32 = 2,407.75/x
  3. Step 3: Cross multiply
    3,155.11x = 4,351.32 × 2,407.75
  4. Step 4: Simplify right side
    3,155.11x = 10,476,879.85
  5. Step 5: Solve for x
    x = 10,476,879.85/3,155.11
  6. Step 6: Final answer
    x = 3,320.61

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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.