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Finding the Fourth Proportional to 5,309.44, 7,965.82 and 4,143.42

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Solution

The fourth proportional to 5,309.44, 7,965.82 and 4,143.42 is: 6,216.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.44 : 7,965.82 = 4,143.42 : x
  2. Step 2: Convert to fraction form
    5,309.44/7,965.82 = 4,143.42/x
  3. Step 3: Cross multiply
    5,309.44x = 7,965.82 × 4,143.42
  4. Step 4: Simplify right side
    5,309.44x = 33,005,737.90
  5. Step 5: Solve for x
    x = 33,005,737.90/5,309.44
  6. Step 6: Final answer
    x = 6,216.43

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1.5x scale

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.