Home / 2,812.27-3,880.94-1,553.30

Finding the Fourth Proportional to 2,812.27, 3,880.94 and 1,553.30

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Solution

The fourth proportional to 2,812.27, 3,880.94 and 1,553.30 is: 2,143.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.27 : 3,880.94 = 1,553.30 : x
  2. Step 2: Convert to fraction form
    2,812.27/3,880.94 = 1,553.30/x
  3. Step 3: Cross multiply
    2,812.27x = 3,880.94 × 1,553.30
  4. Step 4: Simplify right side
    2,812.27x = 6,028,264.10
  5. Step 5: Solve for x
    x = 6,028,264.10/2,812.27
  6. Step 6: Final answer
    x = 2,143.56

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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.