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Finding the Fourth Proportional to 2,643.24, 3,965.04 and 695.44

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Solution

The fourth proportional to 2,643.24, 3,965.04 and 695.44 is: 1,043.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.24 : 3,965.04 = 695.44 : x
  2. Step 2: Convert to fraction form
    2,643.24/3,965.04 = 695.44/x
  3. Step 3: Cross multiply
    2,643.24x = 3,965.04 × 695.44
  4. Step 4: Simplify right side
    2,643.24x = 2,757,447.42
  5. Step 5: Solve for x
    x = 2,757,447.42/2,643.24
  6. Step 6: Final answer
    x = 1,043.21

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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.