Home / 1,992.25-2,748.55-1,235.68

Finding the Fourth Proportional to 1,992.25, 2,748.55 and 1,235.68

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Solution

The fourth proportional to 1,992.25, 2,748.55 and 1,235.68 is: 1,704.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.25 : 2,748.55 = 1,235.68 : x
  2. Step 2: Convert to fraction form
    1,992.25/2,748.55 = 1,235.68/x
  3. Step 3: Cross multiply
    1,992.25x = 2,748.55 × 1,235.68
  4. Step 4: Simplify right side
    1,992.25x = 3,396,318.30
  5. Step 5: Solve for x
    x = 3,396,318.30/1,992.25
  6. Step 6: Final answer
    x = 1,704.77

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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.