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Finding the Fourth Proportional to 3,318.64, 4,976.54 and 1,126.37

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Solution

The fourth proportional to 3,318.64, 4,976.54 and 1,126.37 is: 1,689.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.64 : 4,976.54 = 1,126.37 : x
  2. Step 2: Convert to fraction form
    3,318.64/4,976.54 = 1,126.37/x
  3. Step 3: Cross multiply
    3,318.64x = 4,976.54 × 1,126.37
  4. Step 4: Simplify right side
    3,318.64x = 5,605,436.39
  5. Step 5: Solve for x
    x = 5,605,436.39/3,318.64
  6. Step 6: Final answer
    x = 1,689.08

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.