Home / 2,190.06-3,286.46-1,216.84

Finding the Fourth Proportional to 2,190.06, 3,286.46 and 1,216.84

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Solution

The fourth proportional to 2,190.06, 3,286.46 and 1,216.84 is: 1,826.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.06 : 3,286.46 = 1,216.84 : x
  2. Step 2: Convert to fraction form
    2,190.06/3,286.46 = 1,216.84/x
  3. Step 3: Cross multiply
    2,190.06x = 3,286.46 × 1,216.84
  4. Step 4: Simplify right side
    2,190.06x = 3,999,095.99
  5. Step 5: Solve for x
    x = 3,999,095.99/2,190.06
  6. Step 6: Final answer
    x = 1,826.02

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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.