Home / 1,992.18-2,749.31-1,108

Finding the Fourth Proportional to 1,992.18, 2,749.31 and 1,108

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Solution

The fourth proportional to 1,992.18, 2,749.31 and 1,108 is: 1,529.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.18 : 2,749.31 = 1,108 : x
  2. Step 2: Convert to fraction form
    1,992.18/2,749.31 = 1,108/x
  3. Step 3: Cross multiply
    1,992.18x = 2,749.31 × 1,108
  4. Step 4: Simplify right side
    1,992.18x = 3,046,235.48
  5. Step 5: Solve for x
    x = 3,046,235.48/1,992.18
  6. Step 6: Final answer
    x = 1,529.10

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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.