Home / 2,815.14-4,220.33-1,720.28

Finding the Fourth Proportional to 2,815.14, 4,220.33 and 1,720.28

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Solution

The fourth proportional to 2,815.14, 4,220.33 and 1,720.28 is: 2,578.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.14 : 4,220.33 = 1,720.28 : x
  2. Step 2: Convert to fraction form
    2,815.14/4,220.33 = 1,720.28/x
  3. Step 3: Cross multiply
    2,815.14x = 4,220.33 × 1,720.28
  4. Step 4: Simplify right side
    2,815.14x = 7,260,149.29
  5. Step 5: Solve for x
    x = 7,260,149.29/2,815.14
  6. Step 6: Final answer
    x = 2,578.97

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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.