Home / 5,631.43-8,448.89-2,121.75

Finding the Fourth Proportional to 5,631.43, 8,448.89 and 2,121.75

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Solution

The fourth proportional to 5,631.43, 8,448.89 and 2,121.75 is: 3,183.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.43 : 8,448.89 = 2,121.75 : x
  2. Step 2: Convert to fraction form
    5,631.43/8,448.89 = 2,121.75/x
  3. Step 3: Cross multiply
    5,631.43x = 8,448.89 × 2,121.75
  4. Step 4: Simplify right side
    5,631.43x = 17,926,432.36
  5. Step 5: Solve for x
    x = 17,926,432.36/5,631.43
  6. Step 6: Final answer
    x = 3,183.28

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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.