Home / 2,879.42-3,975.46-2,084.09

Finding the Fourth Proportional to 2,879.42, 3,975.46 and 2,084.09

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Solution

The fourth proportional to 2,879.42, 3,975.46 and 2,084.09 is: 2,877.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.42 : 3,975.46 = 2,084.09 : x
  2. Step 2: Convert to fraction form
    2,879.42/3,975.46 = 2,084.09/x
  3. Step 3: Cross multiply
    2,879.42x = 3,975.46 × 2,084.09
  4. Step 4: Simplify right side
    2,879.42x = 8,285,191.34
  5. Step 5: Solve for x
    x = 8,285,191.34/2,879.42
  6. Step 6: Final answer
    x = 2,877.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.