Home / 5,407.56-8,105.40-2,120.04

Finding the Fourth Proportional to 5,407.56, 8,105.40 and 2,120.04

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Solution

The fourth proportional to 5,407.56, 8,105.40 and 2,120.04 is: 3,177.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,407.56 : 8,105.40 = 2,120.04 : x
  2. Step 2: Convert to fraction form
    5,407.56/8,105.40 = 2,120.04/x
  3. Step 3: Cross multiply
    5,407.56x = 8,105.40 × 2,120.04
  4. Step 4: Simplify right side
    5,407.56x = 17,183,772.22
  5. Step 5: Solve for x
    x = 17,183,772.22/5,407.56
  6. Step 6: Final answer
    x = 3,177.73

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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.