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Finding the Fourth Proportional to 3,019.93, 4,529.73 and 828.61

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Solution

The fourth proportional to 3,019.93, 4,529.73 and 828.61 is: 1,242.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,019.93 : 4,529.73 = 828.61 : x
  2. Step 2: Convert to fraction form
    3,019.93/4,529.73 = 828.61/x
  3. Step 3: Cross multiply
    3,019.93x = 4,529.73 × 828.61
  4. Step 4: Simplify right side
    3,019.93x = 3,753,379.58
  5. Step 5: Solve for x
    x = 3,753,379.58/3,019.93
  6. Step 6: Final answer
    x = 1,242.87

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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.