Home / 3,578.60-5,363.75-2,921.49

Finding the Fourth Proportional to 3,578.60, 5,363.75 and 2,921.49

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Solution

The fourth proportional to 3,578.60, 5,363.75 and 2,921.49 is: 4,378.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.60 : 5,363.75 = 2,921.49 : x
  2. Step 2: Convert to fraction form
    3,578.60/5,363.75 = 2,921.49/x
  3. Step 3: Cross multiply
    3,578.60x = 5,363.75 × 2,921.49
  4. Step 4: Simplify right side
    3,578.60x = 15,670,149.29
  5. Step 5: Solve for x
    x = 15,670,149.29/3,578.60
  6. Step 6: Final answer
    x = 4,378.85

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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.