Home / 3,086.46-4,630.32-1,138.68

Finding the Fourth Proportional to 3,086.46, 4,630.32 and 1,138.68

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Solution

The fourth proportional to 3,086.46, 4,630.32 and 1,138.68 is: 1,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.46 : 4,630.32 = 1,138.68 : x
  2. Step 2: Convert to fraction form
    3,086.46/4,630.32 = 1,138.68/x
  3. Step 3: Cross multiply
    3,086.46x = 4,630.32 × 1,138.68
  4. Step 4: Simplify right side
    3,086.46x = 5,272,452.78
  5. Step 5: Solve for x
    x = 5,272,452.78/3,086.46
  6. Step 6: Final answer
    x = 1,708.25

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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.