Home / 3,540.20-5,310.30-943.40

Finding the Fourth Proportional to 3,540.20, 5,310.30 and 943.40

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Solution

The fourth proportional to 3,540.20, 5,310.30 and 943.40 is: 1,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.20 : 5,310.30 = 943.40 : x
  2. Step 2: Convert to fraction form
    3,540.20/5,310.30 = 943.40/x
  3. Step 3: Cross multiply
    3,540.20x = 5,310.30 × 943.40
  4. Step 4: Simplify right side
    3,540.20x = 5,009,737.02
  5. Step 5: Solve for x
    x = 5,009,737.02/3,540.20
  6. Step 6: Final answer
    x = 1,415.10

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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.