Home / 1,968.38-2,716.27-1,072.12

Finding the Fourth Proportional to 1,968.38, 2,716.27 and 1,072.12

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Solution

The fourth proportional to 1,968.38, 2,716.27 and 1,072.12 is: 1,479.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.38 : 2,716.27 = 1,072.12 : x
  2. Step 2: Convert to fraction form
    1,968.38/2,716.27 = 1,072.12/x
  3. Step 3: Cross multiply
    1,968.38x = 2,716.27 × 1,072.12
  4. Step 4: Simplify right side
    1,968.38x = 2,912,160.60
  5. Step 5: Solve for x
    x = 2,912,160.60/1,968.38
  6. Step 6: Final answer
    x = 1,479.47

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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.