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Finding the Fourth Proportional to 2,579.28, 3,869.22 and 935.37

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Solution

The fourth proportional to 2,579.28, 3,869.22 and 935.37 is: 1,403.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.28 : 3,869.22 = 935.37 : x
  2. Step 2: Convert to fraction form
    2,579.28/3,869.22 = 935.37/x
  3. Step 3: Cross multiply
    2,579.28x = 3,869.22 × 935.37
  4. Step 4: Simplify right side
    2,579.28x = 3,619,152.31
  5. Step 5: Solve for x
    x = 3,619,152.31/2,579.28
  6. Step 6: Final answer
    x = 1,403.16

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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.