Home / 1,992.27-2,984.80-1,113.72

Finding the Fourth Proportional to 1,992.27, 2,984.80 and 1,113.72

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Solution

The fourth proportional to 1,992.27, 2,984.80 and 1,113.72 is: 1,668.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.27 : 2,984.80 = 1,113.72 : x
  2. Step 2: Convert to fraction form
    1,992.27/2,984.80 = 1,113.72/x
  3. Step 3: Cross multiply
    1,992.27x = 2,984.80 × 1,113.72
  4. Step 4: Simplify right side
    1,992.27x = 3,324,231.46
  5. Step 5: Solve for x
    x = 3,324,231.46/1,992.27
  6. Step 6: Final answer
    x = 1,668.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.