Home / 3,921.90-5,414.90-2,743.35

Finding the Fourth Proportional to 3,921.90, 5,414.90 and 2,743.35

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Solution

The fourth proportional to 3,921.90, 5,414.90 and 2,743.35 is: 3,787.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.90 : 5,414.90 = 2,743.35 : x
  2. Step 2: Convert to fraction form
    3,921.90/5,414.90 = 2,743.35/x
  3. Step 3: Cross multiply
    3,921.90x = 5,414.90 × 2,743.35
  4. Step 4: Simplify right side
    3,921.90x = 14,854,952.20
  5. Step 5: Solve for x
    x = 14,854,952.20/3,921.90
  6. Step 6: Final answer
    x = 3,787.69

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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.