Home / 2,812.22-3,880.92-1,553.27

Finding the Fourth Proportional to 2,812.22, 3,880.92 and 1,553.27

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Solution

The fourth proportional to 2,812.22, 3,880.92 and 1,553.27 is: 2,143.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.22 : 3,880.92 = 1,553.27 : x
  2. Step 2: Convert to fraction form
    2,812.22/3,880.92 = 1,553.27/x
  3. Step 3: Cross multiply
    2,812.22x = 3,880.92 × 1,553.27
  4. Step 4: Simplify right side
    2,812.22x = 6,028,116.61
  5. Step 5: Solve for x
    x = 6,028,116.61/2,812.22
  6. Step 6: Final answer
    x = 2,143.54

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1.5x scale

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.