Home / 2,190.09-3,286.73-1,643.75

Finding the Fourth Proportional to 2,190.09, 3,286.73 and 1,643.75

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Solution

The fourth proportional to 2,190.09, 3,286.73 and 1,643.75 is: 2,466.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.09 : 3,286.73 = 1,643.75 : x
  2. Step 2: Convert to fraction form
    2,190.09/3,286.73 = 1,643.75/x
  3. Step 3: Cross multiply
    2,190.09x = 3,286.73 × 1,643.75
  4. Step 4: Simplify right side
    2,190.09x = 5,402,562.44
  5. Step 5: Solve for x
    x = 5,402,562.44/2,190.09
  6. Step 6: Final answer
    x = 2,466.82

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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.