Home / 2,140.43-3,205.17-1,896.21

Finding the Fourth Proportional to 2,140.43, 3,205.17 and 1,896.21

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Solution

The fourth proportional to 2,140.43, 3,205.17 and 1,896.21 is: 2,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.43 : 3,205.17 = 1,896.21 : x
  2. Step 2: Convert to fraction form
    2,140.43/3,205.17 = 1,896.21/x
  3. Step 3: Cross multiply
    2,140.43x = 3,205.17 × 1,896.21
  4. Step 4: Simplify right side
    2,140.43x = 6,077,675.41
  5. Step 5: Solve for x
    x = 6,077,675.41/2,140.43
  6. Step 6: Final answer
    x = 2,839.47

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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.