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Finding the Fourth Proportional to 3,387.57, 5,106.65 and 3,161.73

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Solution

The fourth proportional to 3,387.57, 5,106.65 and 3,161.73 is: 4,766.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.57 : 5,106.65 = 3,161.73 : x
  2. Step 2: Convert to fraction form
    3,387.57/5,106.65 = 3,161.73/x
  3. Step 3: Cross multiply
    3,387.57x = 5,106.65 × 3,161.73
  4. Step 4: Simplify right side
    3,387.57x = 16,145,851.85
  5. Step 5: Solve for x
    x = 16,145,851.85/3,387.57
  6. Step 6: Final answer
    x = 4,766.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.