Home / 2,749.86-4,123.77-1,105.86

Finding the Fourth Proportional to 2,749.86, 4,123.77 and 1,105.86

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Solution

The fourth proportional to 2,749.86, 4,123.77 and 1,105.86 is: 1,658.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.86 : 4,123.77 = 1,105.86 : x
  2. Step 2: Convert to fraction form
    2,749.86/4,123.77 = 1,105.86/x
  3. Step 3: Cross multiply
    2,749.86x = 4,123.77 × 1,105.86
  4. Step 4: Simplify right side
    2,749.86x = 4,560,312.29
  5. Step 5: Solve for x
    x = 4,560,312.29/2,749.86
  6. Step 6: Final answer
    x = 1,658.38

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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.