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Finding the Fourth Proportional to 2,427.36, 3,640.92 and 695.92

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Solution

The fourth proportional to 2,427.36, 3,640.92 and 695.92 is: 1,043.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,427.36 : 3,640.92 = 695.92 : x
  2. Step 2: Convert to fraction form
    2,427.36/3,640.92 = 695.92/x
  3. Step 3: Cross multiply
    2,427.36x = 3,640.92 × 695.92
  4. Step 4: Simplify right side
    2,427.36x = 2,533,789.05
  5. Step 5: Solve for x
    x = 2,533,789.05/2,427.36
  6. Step 6: Final answer
    x = 1,043.85

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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.