Home / 3,879.19-5,814.69-2,788.43

Finding the Fourth Proportional to 3,879.19, 5,814.69 and 2,788.43

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Solution

The fourth proportional to 3,879.19, 5,814.69 and 2,788.43 is: 4,179.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.19 : 5,814.69 = 2,788.43 : x
  2. Step 2: Convert to fraction form
    3,879.19/5,814.69 = 2,788.43/x
  3. Step 3: Cross multiply
    3,879.19x = 5,814.69 × 2,788.43
  4. Step 4: Simplify right side
    3,879.19x = 16,213,816.51
  5. Step 5: Solve for x
    x = 16,213,816.51/3,879.19
  6. Step 6: Final answer
    x = 4,179.69

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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.