Home / 5,311.92-7,968.84-2,190.19

Finding the Fourth Proportional to 5,311.92, 7,968.84 and 2,190.19

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Solution

The fourth proportional to 5,311.92, 7,968.84 and 2,190.19 is: 3,285.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.92 : 7,968.84 = 2,190.19 : x
  2. Step 2: Convert to fraction form
    5,311.92/7,968.84 = 2,190.19/x
  3. Step 3: Cross multiply
    5,311.92x = 7,968.84 × 2,190.19
  4. Step 4: Simplify right side
    5,311.92x = 17,453,273.68
  5. Step 5: Solve for x
    x = 17,453,273.68/5,311.92
  6. Step 6: Final answer
    x = 3,285.68

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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.