Home / 3,128.25-4,694.51-1,668.43

Finding the Fourth Proportional to 3,128.25, 4,694.51 and 1,668.43

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Solution

The fourth proportional to 3,128.25, 4,694.51 and 1,668.43 is: 2,503.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.25 : 4,694.51 = 1,668.43 : x
  2. Step 2: Convert to fraction form
    3,128.25/4,694.51 = 1,668.43/x
  3. Step 3: Cross multiply
    3,128.25x = 4,694.51 × 1,668.43
  4. Step 4: Simplify right side
    3,128.25x = 7,832,471.36
  5. Step 5: Solve for x
    x = 7,832,471.36/3,128.25
  6. Step 6: Final answer
    x = 2,503.78

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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.