Home / 3,640.90-5,456.78-1,558.46

Finding the Fourth Proportional to 3,640.90, 5,456.78 and 1,558.46

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Solution

The fourth proportional to 3,640.90, 5,456.78 and 1,558.46 is: 2,335.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.90 : 5,456.78 = 1,558.46 : x
  2. Step 2: Convert to fraction form
    3,640.90/5,456.78 = 1,558.46/x
  3. Step 3: Cross multiply
    3,640.90x = 5,456.78 × 1,558.46
  4. Step 4: Simplify right side
    3,640.90x = 8,504,173.36
  5. Step 5: Solve for x
    x = 8,504,173.36/3,640.90
  6. Step 6: Final answer
    x = 2,335.73

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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.