Home / 1,992.16-2,749.04-1,107.92

Finding the Fourth Proportional to 1,992.16, 2,749.04 and 1,107.92

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Solution

The fourth proportional to 1,992.16, 2,749.04 and 1,107.92 is: 1,528.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.16 : 2,749.04 = 1,107.92 : x
  2. Step 2: Convert to fraction form
    1,992.16/2,749.04 = 1,107.92/x
  3. Step 3: Cross multiply
    1,992.16x = 2,749.04 × 1,107.92
  4. Step 4: Simplify right side
    1,992.16x = 3,045,716.40
  5. Step 5: Solve for x
    x = 3,045,716.40/1,992.16
  6. Step 6: Final answer
    x = 1,528.85

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1.5x scale

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.