Home / 3,620.43-5,430.63-2,162.43

Finding the Fourth Proportional to 3,620.43, 5,430.63 and 2,162.43

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Solution

The fourth proportional to 3,620.43, 5,430.63 and 2,162.43 is: 3,243.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.43 : 5,430.63 = 2,162.43 : x
  2. Step 2: Convert to fraction form
    3,620.43/5,430.63 = 2,162.43/x
  3. Step 3: Cross multiply
    3,620.43x = 5,430.63 × 2,162.43
  4. Step 4: Simplify right side
    3,620.43x = 11,743,357.23
  5. Step 5: Solve for x
    x = 11,743,357.23/3,620.43
  6. Step 6: Final answer
    x = 3,243.64

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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.