Home / 3,895.42-5,375.75-2,127.09

Finding the Fourth Proportional to 3,895.42, 5,375.75 and 2,127.09

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Solution

The fourth proportional to 3,895.42, 5,375.75 and 2,127.09 is: 2,935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.42 : 5,375.75 = 2,127.09 : x
  2. Step 2: Convert to fraction form
    3,895.42/5,375.75 = 2,127.09/x
  3. Step 3: Cross multiply
    3,895.42x = 5,375.75 × 2,127.09
  4. Step 4: Simplify right side
    3,895.42x = 11,434,704.07
  5. Step 5: Solve for x
    x = 11,434,704.07/3,895.42
  6. Step 6: Final answer
    x = 2,935.42

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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.