Home / 1,721.55-2,578.23-1,635.47

Finding the Fourth Proportional to 1,721.55, 2,578.23 and 1,635.47

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Solution

The fourth proportional to 1,721.55, 2,578.23 and 1,635.47 is: 2,449.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.55 : 2,578.23 = 1,635.47 : x
  2. Step 2: Convert to fraction form
    1,721.55/2,578.23 = 1,635.47/x
  3. Step 3: Cross multiply
    1,721.55x = 2,578.23 × 1,635.47
  4. Step 4: Simplify right side
    1,721.55x = 4,216,604.93
  5. Step 5: Solve for x
    x = 4,216,604.93/1,721.55
  6. Step 6: Final answer
    x = 2,449.31

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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.