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Finding the Fourth Proportional to 1,992.68, 2,748.44 and 1,362.55

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Solution

The fourth proportional to 1,992.68, 2,748.44 and 1,362.55 is: 1,879.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.68 : 2,748.44 = 1,362.55 : x
  2. Step 2: Convert to fraction form
    1,992.68/2,748.44 = 1,362.55/x
  3. Step 3: Cross multiply
    1,992.68x = 2,748.44 × 1,362.55
  4. Step 4: Simplify right side
    1,992.68x = 3,744,882.80
  5. Step 5: Solve for x
    x = 3,744,882.80/1,992.68
  6. Step 6: Final answer
    x = 1,879.32

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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.