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Finding the Fourth Proportional to 5,149.80, 7,723.84 and 1,864.44

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Solution

The fourth proportional to 5,149.80, 7,723.84 and 1,864.44 is: 2,796.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.80 : 7,723.84 = 1,864.44 : x
  2. Step 2: Convert to fraction form
    5,149.80/7,723.84 = 1,864.44/x
  3. Step 3: Cross multiply
    5,149.80x = 7,723.84 × 1,864.44
  4. Step 4: Simplify right side
    5,149.80x = 14,400,636.25
  5. Step 5: Solve for x
    x = 14,400,636.25/5,149.80
  6. Step 6: Final answer
    x = 2,796.35

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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.