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Finding the Fourth Proportional to 5,682.48, 7,840.92 and 3,198

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Solution

The fourth proportional to 5,682.48, 7,840.92 and 3,198 is: 4,412.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,682.48 : 7,840.92 = 3,198 : x
  2. Step 2: Convert to fraction form
    5,682.48/7,840.92 = 3,198/x
  3. Step 3: Cross multiply
    5,682.48x = 7,840.92 × 3,198
  4. Step 4: Simplify right side
    5,682.48x = 25,075,262.16
  5. Step 5: Solve for x
    x = 25,075,262.16/5,682.48
  6. Step 6: Final answer
    x = 4,412.73

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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.