Home / 2,287.20-3,422.16-2,168.40

Finding the Fourth Proportional to 2,287.20, 3,422.16 and 2,168.40

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Solution

The fourth proportional to 2,287.20, 3,422.16 and 2,168.40 is: 3,244.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.20 : 3,422.16 = 2,168.40 : x
  2. Step 2: Convert to fraction form
    2,287.20/3,422.16 = 2,168.40/x
  3. Step 3: Cross multiply
    2,287.20x = 3,422.16 × 2,168.40
  4. Step 4: Simplify right side
    2,287.20x = 7,420,611.74
  5. Step 5: Solve for x
    x = 7,420,611.74/2,287.20
  6. Step 6: Final answer
    x = 3,244.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.