Home / 3,540.34-5,310.56-1,200.39

Finding the Fourth Proportional to 3,540.34, 5,310.56 and 1,200.39

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Solution

The fourth proportional to 3,540.34, 5,310.56 and 1,200.39 is: 1,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.34 : 5,310.56 = 1,200.39 : x
  2. Step 2: Convert to fraction form
    3,540.34/5,310.56 = 1,200.39/x
  3. Step 3: Cross multiply
    3,540.34x = 5,310.56 × 1,200.39
  4. Step 4: Simplify right side
    3,540.34x = 6,374,743.12
  5. Step 5: Solve for x
    x = 6,374,743.12/3,540.34
  6. Step 6: Final answer
    x = 1,800.60

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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.