Home / 9,147.77-13,721.33-3,879.39

Finding the Fourth Proportional to 9,147.77, 13,721.33 and 3,879.39

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Solution

The fourth proportional to 9,147.77, 13,721.33 and 3,879.39 is: 5,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,147.77 : 13,721.33 = 3,879.39 : x
  2. Step 2: Convert to fraction form
    9,147.77/13,721.33 = 3,879.39/x
  3. Step 3: Cross multiply
    9,147.77x = 13,721.33 × 3,879.39
  4. Step 4: Simplify right side
    9,147.77x = 53,230,370.99
  5. Step 5: Solve for x
    x = 53,230,370.99/9,147.77
  6. Step 6: Final answer
    x = 5,818.95

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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.