Home / 3,414.21-4,712.09-2,853.78

Finding the Fourth Proportional to 3,414.21, 4,712.09 and 2,853.78

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Solution

The fourth proportional to 3,414.21, 4,712.09 and 2,853.78 is: 3,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,414.21 : 4,712.09 = 2,853.78 : x
  2. Step 2: Convert to fraction form
    3,414.21/4,712.09 = 2,853.78/x
  3. Step 3: Cross multiply
    3,414.21x = 4,712.09 × 2,853.78
  4. Step 4: Simplify right side
    3,414.21x = 13,447,253.93
  5. Step 5: Solve for x
    x = 13,447,253.93/3,414.21
  6. Step 6: Final answer
    x = 3,938.61

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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.