Home / 3,865.24-5,334.42-2,979.64

Finding the Fourth Proportional to 3,865.24, 5,334.42 and 2,979.64

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Solution

The fourth proportional to 3,865.24, 5,334.42 and 2,979.64 is: 4,112.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.24 : 5,334.42 = 2,979.64 : x
  2. Step 2: Convert to fraction form
    3,865.24/5,334.42 = 2,979.64/x
  3. Step 3: Cross multiply
    3,865.24x = 5,334.42 × 2,979.64
  4. Step 4: Simplify right side
    3,865.24x = 15,894,651.21
  5. Step 5: Solve for x
    x = 15,894,651.21/3,865.24
  6. Step 6: Final answer
    x = 4,112.20

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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.