Home / 2,754.22-4,131.47-905.30

Finding the Fourth Proportional to 2,754.22, 4,131.47 and 905.30

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Solution

The fourth proportional to 2,754.22, 4,131.47 and 905.30 is: 1,357.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,754.22 : 4,131.47 = 905.30 : x
  2. Step 2: Convert to fraction form
    2,754.22/4,131.47 = 905.30/x
  3. Step 3: Cross multiply
    2,754.22x = 4,131.47 × 905.30
  4. Step 4: Simplify right side
    2,754.22x = 3,740,207.26
  5. Step 5: Solve for x
    x = 3,740,207.26/2,754.22
  6. Step 6: Final answer
    x = 1,357.99

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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.