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Finding the Fourth Proportional to 3,608.07, 4,978.54 and 2,035.86

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Solution

The fourth proportional to 3,608.07, 4,978.54 and 2,035.86 is: 2,809.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.07 : 4,978.54 = 2,035.86 : x
  2. Step 2: Convert to fraction form
    3,608.07/4,978.54 = 2,035.86/x
  3. Step 3: Cross multiply
    3,608.07x = 4,978.54 × 2,035.86
  4. Step 4: Simplify right side
    3,608.07x = 10,135,610.44
  5. Step 5: Solve for x
    x = 10,135,610.44/3,608.07
  6. Step 6: Final answer
    x = 2,809.15

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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.