Home / 2,792.87-4,190.21-1,405.54

Finding the Fourth Proportional to 2,792.87, 4,190.21 and 1,405.54

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Solution

The fourth proportional to 2,792.87, 4,190.21 and 1,405.54 is: 2,108.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.87 : 4,190.21 = 1,405.54 : x
  2. Step 2: Convert to fraction form
    2,792.87/4,190.21 = 1,405.54/x
  3. Step 3: Cross multiply
    2,792.87x = 4,190.21 × 1,405.54
  4. Step 4: Simplify right side
    2,792.87x = 5,889,500.80
  5. Step 5: Solve for x
    x = 5,889,500.80/2,792.87
  6. Step 6: Final answer
    x = 2,108.77

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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.