Home / 4,128.91-5,691.60-3,243.17

Finding the Fourth Proportional to 4,128.91, 5,691.60 and 3,243.17

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Solution

The fourth proportional to 4,128.91, 5,691.60 and 3,243.17 is: 4,470.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.91 : 5,691.60 = 3,243.17 : x
  2. Step 2: Convert to fraction form
    4,128.91/5,691.60 = 3,243.17/x
  3. Step 3: Cross multiply
    4,128.91x = 5,691.60 × 3,243.17
  4. Step 4: Simplify right side
    4,128.91x = 18,458,840.60
  5. Step 5: Solve for x
    x = 18,458,840.60/4,128.91
  6. Step 6: Final answer
    x = 4,470.64

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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.