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Finding the Fourth Proportional to 1,993.54, 2,752.44 and 1,247.80

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Solution

The fourth proportional to 1,993.54, 2,752.44 and 1,247.80 is: 1,722.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.54 : 2,752.44 = 1,247.80 : x
  2. Step 2: Convert to fraction form
    1,993.54/2,752.44 = 1,247.80/x
  3. Step 3: Cross multiply
    1,993.54x = 2,752.44 × 1,247.80
  4. Step 4: Simplify right side
    1,993.54x = 3,434,494.63
  5. Step 5: Solve for x
    x = 3,434,494.63/1,993.54
  6. Step 6: Final answer
    x = 1,722.81

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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.