Home / 2,555.85-3,828.89-2,142.03

Finding the Fourth Proportional to 2,555.85, 3,828.89 and 2,142.03

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Solution

The fourth proportional to 2,555.85, 3,828.89 and 2,142.03 is: 3,208.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.85 : 3,828.89 = 2,142.03 : x
  2. Step 2: Convert to fraction form
    2,555.85/3,828.89 = 2,142.03/x
  3. Step 3: Cross multiply
    2,555.85x = 3,828.89 × 2,142.03
  4. Step 4: Simplify right side
    2,555.85x = 8,201,576.96
  5. Step 5: Solve for x
    x = 8,201,576.96/2,555.85
  6. Step 6: Final answer
    x = 3,208.94

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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.