Home / 1,992.19-2,749.19-1,107.94

Finding the Fourth Proportional to 1,992.19, 2,749.19 and 1,107.94

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Solution

The fourth proportional to 1,992.19, 2,749.19 and 1,107.94 is: 1,528.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.19 : 2,749.19 = 1,107.94 : x
  2. Step 2: Convert to fraction form
    1,992.19/2,749.19 = 1,107.94/x
  3. Step 3: Cross multiply
    1,992.19x = 2,749.19 × 1,107.94
  4. Step 4: Simplify right side
    1,992.19x = 3,045,929.98
  5. Step 5: Solve for x
    x = 3,045,929.98/1,992.19
  6. Step 6: Final answer
    x = 1,528.93

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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.