Home / 3,724.20-5,138.90-2,308.20

Finding the Fourth Proportional to 3,724.20, 5,138.90 and 2,308.20

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Solution

The fourth proportional to 3,724.20, 5,138.90 and 2,308.20 is: 3,185.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.20 : 5,138.90 = 2,308.20 : x
  2. Step 2: Convert to fraction form
    3,724.20/5,138.90 = 2,308.20/x
  3. Step 3: Cross multiply
    3,724.20x = 5,138.90 × 2,308.20
  4. Step 4: Simplify right side
    3,724.20x = 11,861,608.98
  5. Step 5: Solve for x
    x = 11,861,608.98/3,724.20
  6. Step 6: Final answer
    x = 3,185.01

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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.