Home / 3,423.20-5,127.60-2,256.80

Finding the Fourth Proportional to 3,423.20, 5,127.60 and 2,256.80

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Solution

The fourth proportional to 3,423.20, 5,127.60 and 2,256.80 is: 3,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.20 : 5,127.60 = 2,256.80 : x
  2. Step 2: Convert to fraction form
    3,423.20/5,127.60 = 2,256.80/x
  3. Step 3: Cross multiply
    3,423.20x = 5,127.60 × 2,256.80
  4. Step 4: Simplify right side
    3,423.20x = 11,571,967.68
  5. Step 5: Solve for x
    x = 11,571,967.68/3,423.20
  6. Step 6: Final answer
    x = 3,380.45

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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.