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Finding the Fourth Proportional to 5,166.69, 7,749.90 and 1,879.85

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Solution

The fourth proportional to 5,166.69, 7,749.90 and 1,879.85 is: 2,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.69 : 7,749.90 = 1,879.85 : x
  2. Step 2: Convert to fraction form
    5,166.69/7,749.90 = 1,879.85/x
  3. Step 3: Cross multiply
    5,166.69x = 7,749.90 × 1,879.85
  4. Step 4: Simplify right side
    5,166.69x = 14,568,610.77
  5. Step 5: Solve for x
    x = 14,568,610.77/5,166.69
  6. Step 6: Final answer
    x = 2,819.72

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1.5x scale

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.