Home / 2,815.38-3,884.94-1,636.38

Finding the Fourth Proportional to 2,815.38, 3,884.94 and 1,636.38

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Solution

The fourth proportional to 2,815.38, 3,884.94 and 1,636.38 is: 2,258.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.38 : 3,884.94 = 1,636.38 : x
  2. Step 2: Convert to fraction form
    2,815.38/3,884.94 = 1,636.38/x
  3. Step 3: Cross multiply
    2,815.38x = 3,884.94 × 1,636.38
  4. Step 4: Simplify right side
    2,815.38x = 6,357,238.12
  5. Step 5: Solve for x
    x = 6,357,238.12/2,815.38
  6. Step 6: Final answer
    x = 2,258.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.