Home / 1,722.26-2,578.23-1,685.21

Finding the Fourth Proportional to 1,722.26, 2,578.23 and 1,685.21

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Solution

The fourth proportional to 1,722.26, 2,578.23 and 1,685.21 is: 2,522.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.26 : 2,578.23 = 1,685.21 : x
  2. Step 2: Convert to fraction form
    1,722.26/2,578.23 = 1,685.21/x
  3. Step 3: Cross multiply
    1,722.26x = 2,578.23 × 1,685.21
  4. Step 4: Simplify right side
    1,722.26x = 4,344,846.09
  5. Step 5: Solve for x
    x = 4,344,846.09/1,722.26
  6. Step 6: Final answer
    x = 2,522.75

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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.