Home / 3,425.40-5,128.02-3,192.12

Finding the Fourth Proportional to 3,425.40, 5,128.02 and 3,192.12

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Solution

The fourth proportional to 3,425.40, 5,128.02 and 3,192.12 is: 4,778.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.40 : 5,128.02 = 3,192.12 : x
  2. Step 2: Convert to fraction form
    3,425.40/5,128.02 = 3,192.12/x
  3. Step 3: Cross multiply
    3,425.40x = 5,128.02 × 3,192.12
  4. Step 4: Simplify right side
    3,425.40x = 16,369,255.20
  5. Step 5: Solve for x
    x = 16,369,255.20/3,425.40
  6. Step 6: Final answer
    x = 4,778.79

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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.