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Finding the Fourth Proportional to 1,396.56, 1,927.33 and 799.11

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Solution

The fourth proportional to 1,396.56, 1,927.33 and 799.11 is: 1,102.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.56 : 1,927.33 = 799.11 : x
  2. Step 2: Convert to fraction form
    1,396.56/1,927.33 = 799.11/x
  3. Step 3: Cross multiply
    1,396.56x = 1,927.33 × 799.11
  4. Step 4: Simplify right side
    1,396.56x = 1,540,148.68
  5. Step 5: Solve for x
    x = 1,540,148.68/1,396.56
  6. Step 6: Final answer
    x = 1,102.82

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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.