Home / 1,992.57-2,749.68-1,108.41

Finding the Fourth Proportional to 1,992.57, 2,749.68 and 1,108.41

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Solution

The fourth proportional to 1,992.57, 2,749.68 and 1,108.41 is: 1,529.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.57 : 2,749.68 = 1,108.41 : x
  2. Step 2: Convert to fraction form
    1,992.57/2,749.68 = 1,108.41/x
  3. Step 3: Cross multiply
    1,992.57x = 2,749.68 × 1,108.41
  4. Step 4: Simplify right side
    1,992.57x = 3,047,772.81
  5. Step 5: Solve for x
    x = 3,047,772.81/1,992.57
  6. Step 6: Final answer
    x = 1,529.57

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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.