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Finding the Fourth Proportional to 3,608.64, 4,974.48 and 2,821.32

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Solution

The fourth proportional to 3,608.64, 4,974.48 and 2,821.32 is: 3,889.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.64 : 4,974.48 = 2,821.32 : x
  2. Step 2: Convert to fraction form
    3,608.64/4,974.48 = 2,821.32/x
  3. Step 3: Cross multiply
    3,608.64x = 4,974.48 × 2,821.32
  4. Step 4: Simplify right side
    3,608.64x = 14,034,599.91
  5. Step 5: Solve for x
    x = 14,034,599.91/3,608.64
  6. Step 6: Final answer
    x = 3,889.17

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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.