Home / 3,128.31-4,690.97-1,179.27

Finding the Fourth Proportional to 3,128.31, 4,690.97 and 1,179.27

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Solution

The fourth proportional to 3,128.31, 4,690.97 and 1,179.27 is: 1,768.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.31 : 4,690.97 = 1,179.27 : x
  2. Step 2: Convert to fraction form
    3,128.31/4,690.97 = 1,179.27/x
  3. Step 3: Cross multiply
    3,128.31x = 4,690.97 × 1,179.27
  4. Step 4: Simplify right side
    3,128.31x = 5,531,914.30
  5. Step 5: Solve for x
    x = 5,531,914.30/3,128.31
  6. Step 6: Final answer
    x = 1,768.34

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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.