Home / 3,087.46-4,631.82-1,139.68

Finding the Fourth Proportional to 3,087.46, 4,631.82 and 1,139.68

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Solution

The fourth proportional to 3,087.46, 4,631.82 and 1,139.68 is: 1,709.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.46 : 4,631.82 = 1,139.68 : x
  2. Step 2: Convert to fraction form
    3,087.46/4,631.82 = 1,139.68/x
  3. Step 3: Cross multiply
    3,087.46x = 4,631.82 × 1,139.68
  4. Step 4: Simplify right side
    3,087.46x = 5,278,792.62
  5. Step 5: Solve for x
    x = 5,278,792.62/3,087.46
  6. Step 6: Final answer
    x = 1,709.75

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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.