Home / 3,555.05-5,321.57-2,855.21

Finding the Fourth Proportional to 3,555.05, 5,321.57 and 2,855.21

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Solution

The fourth proportional to 3,555.05, 5,321.57 and 2,855.21 is: 4,273.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.05 : 5,321.57 = 2,855.21 : x
  2. Step 2: Convert to fraction form
    3,555.05/5,321.57 = 2,855.21/x
  3. Step 3: Cross multiply
    3,555.05x = 5,321.57 × 2,855.21
  4. Step 4: Simplify right side
    3,555.05x = 15,194,159.00
  5. Step 5: Solve for x
    x = 15,194,159.00/3,555.05
  6. Step 6: Final answer
    x = 4,273.97

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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.