Home / 2,640.12-3,635.97-2,193.99

Finding the Fourth Proportional to 2,640.12, 3,635.97 and 2,193.99

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Solution

The fourth proportional to 2,640.12, 3,635.97 and 2,193.99 is: 3,021.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.12 : 3,635.97 = 2,193.99 : x
  2. Step 2: Convert to fraction form
    2,640.12/3,635.97 = 2,193.99/x
  3. Step 3: Cross multiply
    2,640.12x = 3,635.97 × 2,193.99
  4. Step 4: Simplify right side
    2,640.12x = 7,977,299.57
  5. Step 5: Solve for x
    x = 7,977,299.57/2,640.12
  6. Step 6: Final answer
    x = 3,021.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.