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Finding the Fourth Proportional to 3,155.82, 4,356.84 and 2,187.46

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Solution

The fourth proportional to 3,155.82, 4,356.84 and 2,187.46 is: 3,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.82 : 4,356.84 = 2,187.46 : x
  2. Step 2: Convert to fraction form
    3,155.82/4,356.84 = 2,187.46/x
  3. Step 3: Cross multiply
    3,155.82x = 4,356.84 × 2,187.46
  4. Step 4: Simplify right side
    3,155.82x = 9,530,413.23
  5. Step 5: Solve for x
    x = 9,530,413.23/3,155.82
  6. Step 6: Final answer
    x = 3,019.95

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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.