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Finding the Fourth Proportional to 3,920.67, 5,879.32 and 1,453.68

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Solution

The fourth proportional to 3,920.67, 5,879.32 and 1,453.68 is: 2,179.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.67 : 5,879.32 = 1,453.68 : x
  2. Step 2: Convert to fraction form
    3,920.67/5,879.32 = 1,453.68/x
  3. Step 3: Cross multiply
    3,920.67x = 5,879.32 × 1,453.68
  4. Step 4: Simplify right side
    3,920.67x = 8,546,646.26
  5. Step 5: Solve for x
    x = 8,546,646.26/3,920.67
  6. Step 6: Final answer
    x = 2,179.89

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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.