Home / 2,021.15-2,789.03-1,136.78

Finding the Fourth Proportional to 2,021.15, 2,789.03 and 1,136.78

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Solution

The fourth proportional to 2,021.15, 2,789.03 and 1,136.78 is: 1,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.15 : 2,789.03 = 1,136.78 : x
  2. Step 2: Convert to fraction form
    2,021.15/2,789.03 = 1,136.78/x
  3. Step 3: Cross multiply
    2,021.15x = 2,789.03 × 1,136.78
  4. Step 4: Simplify right side
    2,021.15x = 3,170,512.88
  5. Step 5: Solve for x
    x = 3,170,512.88/2,021.15
  6. Step 6: Final answer
    x = 1,568.67

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