Home / 1,721.25-2,578.91-1,135.89

Finding the Fourth Proportional to 1,721.25, 2,578.91 and 1,135.89

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Solution

The fourth proportional to 1,721.25, 2,578.91 and 1,135.89 is: 1,701.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.25 : 2,578.91 = 1,135.89 : x
  2. Step 2: Convert to fraction form
    1,721.25/2,578.91 = 1,135.89/x
  3. Step 3: Cross multiply
    1,721.25x = 2,578.91 × 1,135.89
  4. Step 4: Simplify right side
    1,721.25x = 2,929,352.40
  5. Step 5: Solve for x
    x = 2,929,352.40/1,721.25
  6. Step 6: Final answer
    x = 1,701.88

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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.