Home / 2,120.34-3,180.33-581.34

Finding the Fourth Proportional to 2,120.34, 3,180.33 and 581.34

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Solution

The fourth proportional to 2,120.34, 3,180.33 and 581.34 is: 871.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.34 : 3,180.33 = 581.34 : x
  2. Step 2: Convert to fraction form
    2,120.34/3,180.33 = 581.34/x
  3. Step 3: Cross multiply
    2,120.34x = 3,180.33 × 581.34
  4. Step 4: Simplify right side
    2,120.34x = 1,848,853.04
  5. Step 5: Solve for x
    x = 1,848,853.04/2,120.34
  6. Step 6: Final answer
    x = 871.96

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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.