Home / 5,180.80-7,768.37-4,081.90

Finding the Fourth Proportional to 5,180.80, 7,768.37 and 4,081.90

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Solution

The fourth proportional to 5,180.80, 7,768.37 and 4,081.90 is: 6,120.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.80 : 7,768.37 = 4,081.90 : x
  2. Step 2: Convert to fraction form
    5,180.80/7,768.37 = 4,081.90/x
  3. Step 3: Cross multiply
    5,180.80x = 7,768.37 × 4,081.90
  4. Step 4: Simplify right side
    5,180.80x = 31,709,689.09
  5. Step 5: Solve for x
    x = 31,709,689.09/5,180.80
  6. Step 6: Final answer
    x = 6,120.62

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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.