Home / 2,615-3,922.84-1,382.46

Finding the Fourth Proportional to 2,615, 3,922.84 and 1,382.46

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Solution

The fourth proportional to 2,615, 3,922.84 and 1,382.46 is: 2,073.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615 : 3,922.84 = 1,382.46 : x
  2. Step 2: Convert to fraction form
    2,615/3,922.84 = 1,382.46/x
  3. Step 3: Cross multiply
    2,615x = 3,922.84 × 1,382.46
  4. Step 4: Simplify right side
    2,615x = 5,423,169.39
  5. Step 5: Solve for x
    x = 5,423,169.39/2,615
  6. Step 6: Final answer
    x = 2,073.87

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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.