Home / 2,857.76-4,277.14-2,515.22

Finding the Fourth Proportional to 2,857.76, 4,277.14 and 2,515.22

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Solution

The fourth proportional to 2,857.76, 4,277.14 and 2,515.22 is: 3,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.76 : 4,277.14 = 2,515.22 : x
  2. Step 2: Convert to fraction form
    2,857.76/4,277.14 = 2,515.22/x
  3. Step 3: Cross multiply
    2,857.76x = 4,277.14 × 2,515.22
  4. Step 4: Simplify right side
    2,857.76x = 10,757,936.44
  5. Step 5: Solve for x
    x = 10,757,936.44/2,857.76
  6. Step 6: Final answer
    x = 3,764.47

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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.