Home / 3,287.20-4,922.70-3,141.40

Finding the Fourth Proportional to 3,287.20, 4,922.70 and 3,141.40

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Solution

The fourth proportional to 3,287.20, 4,922.70 and 3,141.40 is: 4,704.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,287.20 : 4,922.70 = 3,141.40 : x
  2. Step 2: Convert to fraction form
    3,287.20/4,922.70 = 3,141.40/x
  3. Step 3: Cross multiply
    3,287.20x = 4,922.70 × 3,141.40
  4. Step 4: Simplify right side
    3,287.20x = 15,464,169.78
  5. Step 5: Solve for x
    x = 15,464,169.78/3,287.20
  6. Step 6: Final answer
    x = 4,704.36

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1.5x scale

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.