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Finding the Fourth Proportional to 3,189.14, 4,783.70 and 849.14

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Solution

The fourth proportional to 3,189.14, 4,783.70 and 849.14 is: 1,273.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.14 : 4,783.70 = 849.14 : x
  2. Step 2: Convert to fraction form
    3,189.14/4,783.70 = 849.14/x
  3. Step 3: Cross multiply
    3,189.14x = 4,783.70 × 849.14
  4. Step 4: Simplify right side
    3,189.14x = 4,062,026.77
  5. Step 5: Solve for x
    x = 4,062,026.77/3,189.14
  6. Step 6: Final answer
    x = 1,273.71

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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.