Home / 2,012.20-3,015.75-1,085.86

Finding the Fourth Proportional to 2,012.20, 3,015.75 and 1,085.86

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Solution

The fourth proportional to 2,012.20, 3,015.75 and 1,085.86 is: 1,627.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.20 : 3,015.75 = 1,085.86 : x
  2. Step 2: Convert to fraction form
    2,012.20/3,015.75 = 1,085.86/x
  3. Step 3: Cross multiply
    2,012.20x = 3,015.75 × 1,085.86
  4. Step 4: Simplify right side
    2,012.20x = 3,274,682.30
  5. Step 5: Solve for x
    x = 3,274,682.30/2,012.20
  6. Step 6: Final answer
    x = 1,627.41

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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.