Home / 3,180.72-4,771.08-1,861.24

Finding the Fourth Proportional to 3,180.72, 4,771.08 and 1,861.24

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Solution

The fourth proportional to 3,180.72, 4,771.08 and 1,861.24 is: 2,791.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.72 : 4,771.08 = 1,861.24 : x
  2. Step 2: Convert to fraction form
    3,180.72/4,771.08 = 1,861.24/x
  3. Step 3: Cross multiply
    3,180.72x = 4,771.08 × 1,861.24
  4. Step 4: Simplify right side
    3,180.72x = 8,880,124.94
  5. Step 5: Solve for x
    x = 8,880,124.94/3,180.72
  6. Step 6: Final answer
    x = 2,791.86

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1.5x scale

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.