Home / 2,190.13-3,286.95-1,020.67

Finding the Fourth Proportional to 2,190.13, 3,286.95 and 1,020.67

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Solution

The fourth proportional to 2,190.13, 3,286.95 and 1,020.67 is: 1,531.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.13 : 3,286.95 = 1,020.67 : x
  2. Step 2: Convert to fraction form
    2,190.13/3,286.95 = 1,020.67/x
  3. Step 3: Cross multiply
    2,190.13x = 3,286.95 × 1,020.67
  4. Step 4: Simplify right side
    2,190.13x = 3,354,891.26
  5. Step 5: Solve for x
    x = 3,354,891.26/2,190.13
  6. Step 6: Final answer
    x = 1,531.82

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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.