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Finding the Fourth Proportional to 3,853.82, 5,784.01 and 1,515.46

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Solution

The fourth proportional to 3,853.82, 5,784.01 and 1,515.46 is: 2,274.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.82 : 5,784.01 = 1,515.46 : x
  2. Step 2: Convert to fraction form
    3,853.82/5,784.01 = 1,515.46/x
  3. Step 3: Cross multiply
    3,853.82x = 5,784.01 × 1,515.46
  4. Step 4: Simplify right side
    3,853.82x = 8,765,435.79
  5. Step 5: Solve for x
    x = 8,765,435.79/3,853.82
  6. Step 6: Final answer
    x = 2,274.48

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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.