Home / 5,420.46-8,131.82-3,081.54

Finding the Fourth Proportional to 5,420.46, 8,131.82 and 3,081.54

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Solution

The fourth proportional to 5,420.46, 8,131.82 and 3,081.54 is: 4,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.46 : 8,131.82 = 3,081.54 : x
  2. Step 2: Convert to fraction form
    5,420.46/8,131.82 = 3,081.54/x
  3. Step 3: Cross multiply
    5,420.46x = 8,131.82 × 3,081.54
  4. Step 4: Simplify right side
    5,420.46x = 25,058,472.54
  5. Step 5: Solve for x
    x = 25,058,472.54/5,420.46
  6. Step 6: Final answer
    x = 4,622.95

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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.