Home / 2,753.82-4,131.36-905.08

Finding the Fourth Proportional to 2,753.82, 4,131.36 and 905.08

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Solution

The fourth proportional to 2,753.82, 4,131.36 and 905.08 is: 1,357.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.82 : 4,131.36 = 905.08 : x
  2. Step 2: Convert to fraction form
    2,753.82/4,131.36 = 905.08/x
  3. Step 3: Cross multiply
    2,753.82x = 4,131.36 × 905.08
  4. Step 4: Simplify right side
    2,753.82x = 3,739,211.31
  5. Step 5: Solve for x
    x = 3,739,211.31/2,753.82
  6. Step 6: Final answer
    x = 1,357.83

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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.