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Finding the Fourth Proportional to 3,563.63, 4,917.92 and 1,991.72

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Solution

The fourth proportional to 3,563.63, 4,917.92 and 1,991.72 is: 2,748.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,563.63 : 4,917.92 = 1,991.72 : x
  2. Step 2: Convert to fraction form
    3,563.63/4,917.92 = 1,991.72/x
  3. Step 3: Cross multiply
    3,563.63x = 4,917.92 × 1,991.72
  4. Step 4: Simplify right side
    3,563.63x = 9,795,085.07
  5. Step 5: Solve for x
    x = 9,795,085.07/3,563.63
  6. Step 6: Final answer
    x = 2,748.63

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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.