Home / 2,020.20-3,027.60-1,442.40

Finding the Fourth Proportional to 2,020.20, 3,027.60 and 1,442.40

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Solution

The fourth proportional to 2,020.20, 3,027.60 and 1,442.40 is: 2,161.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.20 : 3,027.60 = 1,442.40 : x
  2. Step 2: Convert to fraction form
    2,020.20/3,027.60 = 1,442.40/x
  3. Step 3: Cross multiply
    2,020.20x = 3,027.60 × 1,442.40
  4. Step 4: Simplify right side
    2,020.20x = 4,367,010.24
  5. Step 5: Solve for x
    x = 4,367,010.24/2,020.20
  6. Step 6: Final answer
    x = 2,161.67

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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.