Home / 3,834.89-5,749.20-1,986.54

Finding the Fourth Proportional to 3,834.89, 5,749.20 and 1,986.54

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Solution

The fourth proportional to 3,834.89, 5,749.20 and 1,986.54 is: 2,978.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,834.89 : 5,749.20 = 1,986.54 : x
  2. Step 2: Convert to fraction form
    3,834.89/5,749.20 = 1,986.54/x
  3. Step 3: Cross multiply
    3,834.89x = 5,749.20 × 1,986.54
  4. Step 4: Simplify right side
    3,834.89x = 11,421,015.77
  5. Step 5: Solve for x
    x = 11,421,015.77/3,834.89
  6. Step 6: Final answer
    x = 2,978.19

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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.