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Finding the Fourth Proportional to 6,390.58, 8,819.16 and 3,738.16

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Solution

The fourth proportional to 6,390.58, 8,819.16 and 3,738.16 is: 5,158.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.58 : 8,819.16 = 3,738.16 : x
  2. Step 2: Convert to fraction form
    6,390.58/8,819.16 = 3,738.16/x
  3. Step 3: Cross multiply
    6,390.58x = 8,819.16 × 3,738.16
  4. Step 4: Simplify right side
    6,390.58x = 32,967,431.15
  5. Step 5: Solve for x
    x = 32,967,431.15/6,390.58
  6. Step 6: Final answer
    x = 5,158.75

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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.