Home / 3,619.92-5,430.12-1,022.88

Finding the Fourth Proportional to 3,619.92, 5,430.12 and 1,022.88

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Solution

The fourth proportional to 3,619.92, 5,430.12 and 1,022.88 is: 1,534.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.92 : 5,430.12 = 1,022.88 : x
  2. Step 2: Convert to fraction form
    3,619.92/5,430.12 = 1,022.88/x
  3. Step 3: Cross multiply
    3,619.92x = 5,430.12 × 1,022.88
  4. Step 4: Simplify right side
    3,619.92x = 5,554,361.15
  5. Step 5: Solve for x
    x = 5,554,361.15/3,619.92
  6. Step 6: Final answer
    x = 1,534.39

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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.