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Finding the Fourth Proportional to 4,379.84, 6,571.58 and 2,187.98

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Solution

The fourth proportional to 4,379.84, 6,571.58 and 2,187.98 is: 3,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,379.84 : 6,571.58 = 2,187.98 : x
  2. Step 2: Convert to fraction form
    4,379.84/6,571.58 = 2,187.98/x
  3. Step 3: Cross multiply
    4,379.84x = 6,571.58 × 2,187.98
  4. Step 4: Simplify right side
    4,379.84x = 14,378,485.61
  5. Step 5: Solve for x
    x = 14,378,485.61/4,379.84
  6. Step 6: Final answer
    x = 3,282.88

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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.