Home / 3,180.72-4,389.66-1,764.85

Finding the Fourth Proportional to 3,180.72, 4,389.66 and 1,764.85

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Solution

The fourth proportional to 3,180.72, 4,389.66 and 1,764.85 is: 2,435.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.72 : 4,389.66 = 1,764.85 : x
  2. Step 2: Convert to fraction form
    3,180.72/4,389.66 = 1,764.85/x
  3. Step 3: Cross multiply
    3,180.72x = 4,389.66 × 1,764.85
  4. Step 4: Simplify right side
    3,180.72x = 7,747,091.45
  5. Step 5: Solve for x
    x = 7,747,091.45/3,180.72
  6. Step 6: Final answer
    x = 2,435.64

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Why These Related Problems?

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