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Finding the Fourth Proportional to 3,155.49, 4,355.46 and 1,976.49

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Solution

The fourth proportional to 3,155.49, 4,355.46 and 1,976.49 is: 2,728.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.49 : 4,355.46 = 1,976.49 : x
  2. Step 2: Convert to fraction form
    3,155.49/4,355.46 = 1,976.49/x
  3. Step 3: Cross multiply
    3,155.49x = 4,355.46 × 1,976.49
  4. Step 4: Simplify right side
    3,155.49x = 8,608,523.14
  5. Step 5: Solve for x
    x = 8,608,523.14/3,155.49
  6. Step 6: Final answer
    x = 2,728.11

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.