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Finding the Fourth Proportional to 3,988.58, 5,504.09 and 2,220.14

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Solution

The fourth proportional to 3,988.58, 5,504.09 and 2,220.14 is: 3,063.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.58 : 5,504.09 = 2,220.14 : x
  2. Step 2: Convert to fraction form
    3,988.58/5,504.09 = 2,220.14/x
  3. Step 3: Cross multiply
    3,988.58x = 5,504.09 × 2,220.14
  4. Step 4: Simplify right side
    3,988.58x = 12,219,853.03
  5. Step 5: Solve for x
    x = 12,219,853.03/3,988.58
  6. Step 6: Final answer
    x = 3,063.71

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.