Home / 2,119.70-3,179.60-1,809.59

Finding the Fourth Proportional to 2,119.70, 3,179.60 and 1,809.59

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Solution

The fourth proportional to 2,119.70, 3,179.60 and 1,809.59 is: 2,714.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.70 : 3,179.60 = 1,809.59 : x
  2. Step 2: Convert to fraction form
    2,119.70/3,179.60 = 1,809.59/x
  3. Step 3: Cross multiply
    2,119.70x = 3,179.60 × 1,809.59
  4. Step 4: Simplify right side
    2,119.70x = 5,753,763.32
  5. Step 5: Solve for x
    x = 5,753,763.32/2,119.70
  6. Step 6: Final answer
    x = 2,714.43

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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.