Home / 2,247.21-3,370.86-786.42

Finding the Fourth Proportional to 2,247.21, 3,370.86 and 786.42

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Solution

The fourth proportional to 2,247.21, 3,370.86 and 786.42 is: 1,179.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,247.21 : 3,370.86 = 786.42 : x
  2. Step 2: Convert to fraction form
    2,247.21/3,370.86 = 786.42/x
  3. Step 3: Cross multiply
    2,247.21x = 3,370.86 × 786.42
  4. Step 4: Simplify right side
    2,247.21x = 2,650,911.72
  5. Step 5: Solve for x
    x = 2,650,911.72/2,247.21
  6. Step 6: Final answer
    x = 1,179.65

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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.