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Finding the Fourth Proportional to 3,481.54, 4,804.86 and 1,989.57

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Solution

The fourth proportional to 3,481.54, 4,804.86 and 1,989.57 is: 2,745.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.54 : 4,804.86 = 1,989.57 : x
  2. Step 2: Convert to fraction form
    3,481.54/4,804.86 = 1,989.57/x
  3. Step 3: Cross multiply
    3,481.54x = 4,804.86 × 1,989.57
  4. Step 4: Simplify right side
    3,481.54x = 9,559,605.31
  5. Step 5: Solve for x
    x = 9,559,605.31/3,481.54
  6. Step 6: Final answer
    x = 2,745.80

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1.5x scale

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.