Home / 3,906.95-5,391.84-2,578.34

Finding the Fourth Proportional to 3,906.95, 5,391.84 and 2,578.34

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Solution

The fourth proportional to 3,906.95, 5,391.84 and 2,578.34 is: 3,558.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.95 : 5,391.84 = 2,578.34 : x
  2. Step 2: Convert to fraction form
    3,906.95/5,391.84 = 2,578.34/x
  3. Step 3: Cross multiply
    3,906.95x = 5,391.84 × 2,578.34
  4. Step 4: Simplify right side
    3,906.95x = 13,901,969.79
  5. Step 5: Solve for x
    x = 13,901,969.79/3,906.95
  6. Step 6: Final answer
    x = 3,558.27

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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.