Home / 3,086.15-4,631.29-1,138.35

Finding the Fourth Proportional to 3,086.15, 4,631.29 and 1,138.35

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Solution

The fourth proportional to 3,086.15, 4,631.29 and 1,138.35 is: 1,708.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.15 : 4,631.29 = 1,138.35 : x
  2. Step 2: Convert to fraction form
    3,086.15/4,631.29 = 1,138.35/x
  3. Step 3: Cross multiply
    3,086.15x = 4,631.29 × 1,138.35
  4. Step 4: Simplify right side
    3,086.15x = 5,272,028.97
  5. Step 5: Solve for x
    x = 5,272,028.97/3,086.15
  6. Step 6: Final answer
    x = 1,708.29

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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.