Home / 2,633.80-3,945.90-2,144.20

Finding the Fourth Proportional to 2,633.80, 3,945.90 and 2,144.20

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Solution

The fourth proportional to 2,633.80, 3,945.90 and 2,144.20 is: 3,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,633.80 : 3,945.90 = 2,144.20 : x
  2. Step 2: Convert to fraction form
    2,633.80/3,945.90 = 2,144.20/x
  3. Step 3: Cross multiply
    2,633.80x = 3,945.90 × 2,144.20
  4. Step 4: Simplify right side
    2,633.80x = 8,460,798.78
  5. Step 5: Solve for x
    x = 8,460,798.78/2,633.80
  6. Step 6: Final answer
    x = 3,212.39

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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.