Home / 3,188.70-4,399.20-2,351.40

Finding the Fourth Proportional to 3,188.70, 4,399.20 and 2,351.40

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Solution

The fourth proportional to 3,188.70, 4,399.20 and 2,351.40 is: 3,244.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.70 : 4,399.20 = 2,351.40 : x
  2. Step 2: Convert to fraction form
    3,188.70/4,399.20 = 2,351.40/x
  3. Step 3: Cross multiply
    3,188.70x = 4,399.20 × 2,351.40
  4. Step 4: Simplify right side
    3,188.70x = 10,344,278.88
  5. Step 5: Solve for x
    x = 10,344,278.88/3,188.70
  6. Step 6: Final answer
    x = 3,244.04

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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.