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Finding the Fourth Proportional to 3,138.57, 4,707.90 and 1,494.27

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Solution

The fourth proportional to 3,138.57, 4,707.90 and 1,494.27 is: 2,241.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.57 : 4,707.90 = 1,494.27 : x
  2. Step 2: Convert to fraction form
    3,138.57/4,707.90 = 1,494.27/x
  3. Step 3: Cross multiply
    3,138.57x = 4,707.90 × 1,494.27
  4. Step 4: Simplify right side
    3,138.57x = 7,034,873.73
  5. Step 5: Solve for x
    x = 7,034,873.73/3,138.57
  6. Step 6: Final answer
    x = 2,241.43

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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.