Home / 3,883.68-5,359.46-2,115.32

Finding the Fourth Proportional to 3,883.68, 5,359.46 and 2,115.32

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Solution

The fourth proportional to 3,883.68, 5,359.46 and 2,115.32 is: 2,919.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.68 : 5,359.46 = 2,115.32 : x
  2. Step 2: Convert to fraction form
    3,883.68/5,359.46 = 2,115.32/x
  3. Step 3: Cross multiply
    3,883.68x = 5,359.46 × 2,115.32
  4. Step 4: Simplify right side
    3,883.68x = 11,336,935.55
  5. Step 5: Solve for x
    x = 11,336,935.55/3,883.68
  6. Step 6: Final answer
    x = 2,919.12

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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.