Home / 2,857.07-4,282.06-1,211.75

Finding the Fourth Proportional to 2,857.07, 4,282.06 and 1,211.75

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Solution

The fourth proportional to 2,857.07, 4,282.06 and 1,211.75 is: 1,816.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.07 : 4,282.06 = 1,211.75 : x
  2. Step 2: Convert to fraction form
    2,857.07/4,282.06 = 1,211.75/x
  3. Step 3: Cross multiply
    2,857.07x = 4,282.06 × 1,211.75
  4. Step 4: Simplify right side
    2,857.07x = 5,188,786.21
  5. Step 5: Solve for x
    x = 5,188,786.21/2,857.07
  6. Step 6: Final answer
    x = 1,816.12

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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.