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Finding the Fourth Proportional to 3,481.24, 4,804 and 1,909.32

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Solution

The fourth proportional to 3,481.24, 4,804 and 1,909.32 is: 2,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.24 : 4,804 = 1,909.32 : x
  2. Step 2: Convert to fraction form
    3,481.24/4,804 = 1,909.32/x
  3. Step 3: Cross multiply
    3,481.24x = 4,804 × 1,909.32
  4. Step 4: Simplify right side
    3,481.24x = 9,172,373.28
  5. Step 5: Solve for x
    x = 9,172,373.28/3,481.24
  6. Step 6: Final answer
    x = 2,634.80

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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.