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Finding the Fourth Proportional to 3,189.29, 4,783.25 and 997.73

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Solution

The fourth proportional to 3,189.29, 4,783.25 and 997.73 is: 1,496.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.29 : 4,783.25 = 997.73 : x
  2. Step 2: Convert to fraction form
    3,189.29/4,783.25 = 997.73/x
  3. Step 3: Cross multiply
    3,189.29x = 4,783.25 × 997.73
  4. Step 4: Simplify right side
    3,189.29x = 4,772,415.44
  5. Step 5: Solve for x
    x = 4,772,415.44/3,189.29
  6. Step 6: Final answer
    x = 1,496.39

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1.5x scale

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.