Home / 3,909.31-5,394.36-2,230.54

Finding the Fourth Proportional to 3,909.31, 5,394.36 and 2,230.54

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Solution

The fourth proportional to 3,909.31, 5,394.36 and 2,230.54 is: 3,077.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.31 : 5,394.36 = 2,230.54 : x
  2. Step 2: Convert to fraction form
    3,909.31/5,394.36 = 2,230.54/x
  3. Step 3: Cross multiply
    3,909.31x = 5,394.36 × 2,230.54
  4. Step 4: Simplify right side
    3,909.31x = 12,032,335.75
  5. Step 5: Solve for x
    x = 12,032,335.75/3,909.31
  6. Step 6: Final answer
    x = 3,077.87

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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.