Home / 2,813.11-3,882.09-1,571.11

Finding the Fourth Proportional to 2,813.11, 3,882.09 and 1,571.11

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Solution

The fourth proportional to 2,813.11, 3,882.09 and 1,571.11 is: 2,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.11 : 3,882.09 = 1,571.11 : x
  2. Step 2: Convert to fraction form
    2,813.11/3,882.09 = 1,571.11/x
  3. Step 3: Cross multiply
    2,813.11x = 3,882.09 × 1,571.11
  4. Step 4: Simplify right side
    2,813.11x = 6,099,189.47
  5. Step 5: Solve for x
    x = 6,099,189.47/2,813.11
  6. Step 6: Final answer
    x = 2,168.13

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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.