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Finding the Fourth Proportional to 3,189.36, 4,783.92 and 849.36

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Solution

The fourth proportional to 3,189.36, 4,783.92 and 849.36 is: 1,274.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.36 : 4,783.92 = 849.36 : x
  2. Step 2: Convert to fraction form
    3,189.36/4,783.92 = 849.36/x
  3. Step 3: Cross multiply
    3,189.36x = 4,783.92 × 849.36
  4. Step 4: Simplify right side
    3,189.36x = 4,063,270.29
  5. Step 5: Solve for x
    x = 4,063,270.29/3,189.36
  6. Step 6: Final answer
    x = 1,274.01

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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.