Home / 2,190.29-3,286.35-1,217.07

Finding the Fourth Proportional to 2,190.29, 3,286.35 and 1,217.07

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Solution

The fourth proportional to 2,190.29, 3,286.35 and 1,217.07 is: 1,826.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.29 : 3,286.35 = 1,217.07 : x
  2. Step 2: Convert to fraction form
    2,190.29/3,286.35 = 1,217.07/x
  3. Step 3: Cross multiply
    2,190.29x = 3,286.35 × 1,217.07
  4. Step 4: Simplify right side
    2,190.29x = 3,999,717.99
  5. Step 5: Solve for x
    x = 3,999,717.99/2,190.29
  6. Step 6: Final answer
    x = 1,826.12

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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.