Home / 2,834.21-4,243.44-2,138.78

Finding the Fourth Proportional to 2,834.21, 4,243.44 and 2,138.78

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Solution

The fourth proportional to 2,834.21, 4,243.44 and 2,138.78 is: 3,202.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,834.21 : 4,243.44 = 2,138.78 : x
  2. Step 2: Convert to fraction form
    2,834.21/4,243.44 = 2,138.78/x
  3. Step 3: Cross multiply
    2,834.21x = 4,243.44 × 2,138.78
  4. Step 4: Simplify right side
    2,834.21x = 9,075,784.60
  5. Step 5: Solve for x
    x = 9,075,784.60/2,834.21
  6. Step 6: Final answer
    x = 3,202.23

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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.