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Finding the Fourth Proportional to 3,864.64, 5,797.86 and 1,267.42

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Solution

The fourth proportional to 3,864.64, 5,797.86 and 1,267.42 is: 1,901.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,864.64 : 5,797.86 = 1,267.42 : x
  2. Step 2: Convert to fraction form
    3,864.64/5,797.86 = 1,267.42/x
  3. Step 3: Cross multiply
    3,864.64x = 5,797.86 × 1,267.42
  4. Step 4: Simplify right side
    3,864.64x = 7,348,323.72
  5. Step 5: Solve for x
    x = 7,348,323.72/3,864.64
  6. Step 6: Final answer
    x = 1,901.43

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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.