Home / 3,879.59-5,819.40-1,106.25

Finding the Fourth Proportional to 3,879.59, 5,819.40 and 1,106.25

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Solution

The fourth proportional to 3,879.59, 5,819.40 and 1,106.25 is: 1,659.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.59 : 5,819.40 = 1,106.25 : x
  2. Step 2: Convert to fraction form
    3,879.59/5,819.40 = 1,106.25/x
  3. Step 3: Cross multiply
    3,879.59x = 5,819.40 × 1,106.25
  4. Step 4: Simplify right side
    3,879.59x = 6,437,711.25
  5. Step 5: Solve for x
    x = 6,437,711.25/3,879.59
  6. Step 6: Final answer
    x = 1,659.38

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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.