Home / 2,812.19-3,880.81-1,553.26

Finding the Fourth Proportional to 2,812.19, 3,880.81 and 1,553.26

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Solution

The fourth proportional to 2,812.19, 3,880.81 and 1,553.26 is: 2,143.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.19 : 3,880.81 = 1,553.26 : x
  2. Step 2: Convert to fraction form
    2,812.19/3,880.81 = 1,553.26/x
  3. Step 3: Cross multiply
    2,812.19x = 3,880.81 × 1,553.26
  4. Step 4: Simplify right side
    2,812.19x = 6,027,906.94
  5. Step 5: Solve for x
    x = 6,027,906.94/2,812.19
  6. Step 6: Final answer
    x = 2,143.49

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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.