Home / 3,920.97-5,409.44-2,504.71

Finding the Fourth Proportional to 3,920.97, 5,409.44 and 2,504.71

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Solution

The fourth proportional to 3,920.97, 5,409.44 and 2,504.71 is: 3,455.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.97 : 5,409.44 = 2,504.71 : x
  2. Step 2: Convert to fraction form
    3,920.97/5,409.44 = 2,504.71/x
  3. Step 3: Cross multiply
    3,920.97x = 5,409.44 × 2,504.71
  4. Step 4: Simplify right side
    3,920.97x = 13,549,078.46
  5. Step 5: Solve for x
    x = 13,549,078.46/3,920.97
  6. Step 6: Final answer
    x = 3,455.54

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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.