Home / 3,539.90-5,310.36-1,200.11

Finding the Fourth Proportional to 3,539.90, 5,310.36 and 1,200.11

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Solution

The fourth proportional to 3,539.90, 5,310.36 and 1,200.11 is: 1,800.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.90 : 5,310.36 = 1,200.11 : x
  2. Step 2: Convert to fraction form
    3,539.90/5,310.36 = 1,200.11/x
  3. Step 3: Cross multiply
    3,539.90x = 5,310.36 × 1,200.11
  4. Step 4: Simplify right side
    3,539.90x = 6,373,016.14
  5. Step 5: Solve for x
    x = 6,373,016.14/3,539.90
  6. Step 6: Final answer
    x = 1,800.34

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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.