Home / 2,015.24-3,020.43-858.56

Finding the Fourth Proportional to 2,015.24, 3,020.43 and 858.56

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Solution

The fourth proportional to 2,015.24, 3,020.43 and 858.56 is: 1,286.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.24 : 3,020.43 = 858.56 : x
  2. Step 2: Convert to fraction form
    2,015.24/3,020.43 = 858.56/x
  3. Step 3: Cross multiply
    2,015.24x = 3,020.43 × 858.56
  4. Step 4: Simplify right side
    2,015.24x = 2,593,220.38
  5. Step 5: Solve for x
    x = 2,593,220.38/2,015.24
  6. Step 6: Final answer
    x = 1,286.80

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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.