Home / 2,812.94-4,219.61-1,081.56

Finding the Fourth Proportional to 2,812.94, 4,219.61 and 1,081.56

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Solution

The fourth proportional to 2,812.94, 4,219.61 and 1,081.56 is: 1,622.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.94 : 4,219.61 = 1,081.56 : x
  2. Step 2: Convert to fraction form
    2,812.94/4,219.61 = 1,081.56/x
  3. Step 3: Cross multiply
    2,812.94x = 4,219.61 × 1,081.56
  4. Step 4: Simplify right side
    2,812.94x = 4,563,761.39
  5. Step 5: Solve for x
    x = 4,563,761.39/2,812.94
  6. Step 6: Final answer
    x = 1,622.42

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1.5x scale

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.