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Finding the Fourth Proportional to 1,991.52, 2,746.74 and 1,327.23

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Solution

The fourth proportional to 1,991.52, 2,746.74 and 1,327.23 is: 1,830.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.52 : 2,746.74 = 1,327.23 : x
  2. Step 2: Convert to fraction form
    1,991.52/2,746.74 = 1,327.23/x
  3. Step 3: Cross multiply
    1,991.52x = 2,746.74 × 1,327.23
  4. Step 4: Simplify right side
    1,991.52x = 3,645,555.73
  5. Step 5: Solve for x
    x = 3,645,555.73/1,991.52
  6. Step 6: Final answer
    x = 1,830.54

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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.