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Finding the Fourth Proportional to 3,491.57, 4,818.48 and 1,999.37

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Solution

The fourth proportional to 3,491.57, 4,818.48 and 1,999.37 is: 2,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.57 : 4,818.48 = 1,999.37 : x
  2. Step 2: Convert to fraction form
    3,491.57/4,818.48 = 1,999.37/x
  3. Step 3: Cross multiply
    3,491.57x = 4,818.48 × 1,999.37
  4. Step 4: Simplify right side
    3,491.57x = 9,633,924.36
  5. Step 5: Solve for x
    x = 9,633,924.36/3,491.57
  6. Step 6: Final answer
    x = 2,759.20

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Why These Related Problems?

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