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Finding the Fourth Proportional to 1,906.77, 2,860.49 and 674.90

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Solution

The fourth proportional to 1,906.77, 2,860.49 and 674.90 is: 1,012.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.77 : 2,860.49 = 674.90 : x
  2. Step 2: Convert to fraction form
    1,906.77/2,860.49 = 674.90/x
  3. Step 3: Cross multiply
    1,906.77x = 2,860.49 × 674.90
  4. Step 4: Simplify right side
    1,906.77x = 1,930,527.02
  5. Step 5: Solve for x
    x = 1,930,527.02/1,906.77
  6. Step 6: Final answer
    x = 1,012.46

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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.