Home / 3,919.40-5,414.94-3,608.36

Finding the Fourth Proportional to 3,919.40, 5,414.94 and 3,608.36

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Solution

The fourth proportional to 3,919.40, 5,414.94 and 3,608.36 is: 4,985.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.40 : 5,414.94 = 3,608.36 : x
  2. Step 2: Convert to fraction form
    3,919.40/5,414.94 = 3,608.36/x
  3. Step 3: Cross multiply
    3,919.40x = 5,414.94 × 3,608.36
  4. Step 4: Simplify right side
    3,919.40x = 19,539,052.90
  5. Step 5: Solve for x
    x = 19,539,052.90/3,919.40
  6. Step 6: Final answer
    x = 4,985.22

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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.