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Finding the Fourth Proportional to 2,469.20, 3,703.48 and 930

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Solution

The fourth proportional to 2,469.20, 3,703.48 and 930 is: 1,394.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,469.20 : 3,703.48 = 930 : x
  2. Step 2: Convert to fraction form
    2,469.20/3,703.48 = 930/x
  3. Step 3: Cross multiply
    2,469.20x = 3,703.48 × 930
  4. Step 4: Simplify right side
    2,469.20x = 3,444,236.40
  5. Step 5: Solve for x
    x = 3,444,236.40/2,469.20
  6. Step 6: Final answer
    x = 1,394.88

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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.