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Finding the Fourth Proportional to 1,394.22, 2,092.02 and 985.98

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Solution

The fourth proportional to 1,394.22, 2,092.02 and 985.98 is: 1,479.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.22 : 2,092.02 = 985.98 : x
  2. Step 2: Convert to fraction form
    1,394.22/2,092.02 = 985.98/x
  3. Step 3: Cross multiply
    1,394.22x = 2,092.02 × 985.98
  4. Step 4: Simplify right side
    1,394.22x = 2,062,689.88
  5. Step 5: Solve for x
    x = 2,062,689.88/1,394.22
  6. Step 6: Final answer
    x = 1,479.46

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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.