Home / 3,137.50-4,329.70-1,721.22

Finding the Fourth Proportional to 3,137.50, 4,329.70 and 1,721.22

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Solution

The fourth proportional to 3,137.50, 4,329.70 and 1,721.22 is: 2,375.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.50 : 4,329.70 = 1,721.22 : x
  2. Step 2: Convert to fraction form
    3,137.50/4,329.70 = 1,721.22/x
  3. Step 3: Cross multiply
    3,137.50x = 4,329.70 × 1,721.22
  4. Step 4: Simplify right side
    3,137.50x = 7,452,366.23
  5. Step 5: Solve for x
    x = 7,452,366.23/3,137.50
  6. Step 6: Final answer
    x = 2,375.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.