Home / 5,422.10-8,134.05-2,135.30

Finding the Fourth Proportional to 5,422.10, 8,134.05 and 2,135.30

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Solution

The fourth proportional to 5,422.10, 8,134.05 and 2,135.30 is: 3,203.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.10 : 8,134.05 = 2,135.30 : x
  2. Step 2: Convert to fraction form
    5,422.10/8,134.05 = 2,135.30/x
  3. Step 3: Cross multiply
    5,422.10x = 8,134.05 × 2,135.30
  4. Step 4: Simplify right side
    5,422.10x = 17,368,636.97
  5. Step 5: Solve for x
    x = 17,368,636.97/5,422.10
  6. Step 6: Final answer
    x = 3,203.30

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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.