Home / 3,138.74-4,708.46-1,382.99

Finding the Fourth Proportional to 3,138.74, 4,708.46 and 1,382.99

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Solution

The fourth proportional to 3,138.74, 4,708.46 and 1,382.99 is: 2,074.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.74 : 4,708.46 = 1,382.99 : x
  2. Step 2: Convert to fraction form
    3,138.74/4,708.46 = 1,382.99/x
  3. Step 3: Cross multiply
    3,138.74x = 4,708.46 × 1,382.99
  4. Step 4: Simplify right side
    3,138.74x = 6,511,753.10
  5. Step 5: Solve for x
    x = 6,511,753.10/3,138.74
  6. Step 6: Final answer
    x = 2,074.64

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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.