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Finding the Fourth Proportional to 5,135.82, 7,085.54 and 3,369.82

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Solution

The fourth proportional to 5,135.82, 7,085.54 and 3,369.82 is: 4,649.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.82 : 7,085.54 = 3,369.82 : x
  2. Step 2: Convert to fraction form
    5,135.82/7,085.54 = 3,369.82/x
  3. Step 3: Cross multiply
    5,135.82x = 7,085.54 × 3,369.82
  4. Step 4: Simplify right side
    5,135.82x = 23,876,998.40
  5. Step 5: Solve for x
    x = 23,876,998.40/5,135.82
  6. Step 6: Final answer
    x = 4,649.11

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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.