Home / 3,979.72-5,493.78-2,727.40

Finding the Fourth Proportional to 3,979.72, 5,493.78 and 2,727.40

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Solution

The fourth proportional to 3,979.72, 5,493.78 and 2,727.40 is: 3,765.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.72 : 5,493.78 = 2,727.40 : x
  2. Step 2: Convert to fraction form
    3,979.72/5,493.78 = 2,727.40/x
  3. Step 3: Cross multiply
    3,979.72x = 5,493.78 × 2,727.40
  4. Step 4: Simplify right side
    3,979.72x = 14,983,735.57
  5. Step 5: Solve for x
    x = 14,983,735.57/3,979.72
  6. Step 6: Final answer
    x = 3,765.02

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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.