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Finding the Fourth Proportional to 2,679.94, 4,019.91 and 1,447.93

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Solution

The fourth proportional to 2,679.94, 4,019.91 and 1,447.93 is: 2,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.94 : 4,019.91 = 1,447.93 : x
  2. Step 2: Convert to fraction form
    2,679.94/4,019.91 = 1,447.93/x
  3. Step 3: Cross multiply
    2,679.94x = 4,019.91 × 1,447.93
  4. Step 4: Simplify right side
    2,679.94x = 5,820,520.95
  5. Step 5: Solve for x
    x = 5,820,520.95/2,679.94
  6. Step 6: Final answer
    x = 2,171.89

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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.