Home / 3,135.20-4,704.62-1,287.64

Finding the Fourth Proportional to 3,135.20, 4,704.62 and 1,287.64

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Solution

The fourth proportional to 3,135.20, 4,704.62 and 1,287.64 is: 1,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.20 : 4,704.62 = 1,287.64 : x
  2. Step 2: Convert to fraction form
    3,135.20/4,704.62 = 1,287.64/x
  3. Step 3: Cross multiply
    3,135.20x = 4,704.62 × 1,287.64
  4. Step 4: Simplify right side
    3,135.20x = 6,057,838.70
  5. Step 5: Solve for x
    x = 6,057,838.70/3,135.20
  6. Step 6: Final answer
    x = 1,932.20

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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.