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Finding the Fourth Proportional to 6,443.19, 8,891.63 and 3,756.00

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Solution

The fourth proportional to 6,443.19, 8,891.63 and 3,756.00 is: 5,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443.19 : 8,891.63 = 3,756.00 : x
  2. Step 2: Convert to fraction form
    6,443.19/8,891.63 = 3,756.00/x
  3. Step 3: Cross multiply
    6,443.19x = 8,891.63 × 3,756.00
  4. Step 4: Simplify right side
    6,443.19x = 33,396,990.93
  5. Step 5: Solve for x
    x = 33,396,990.93/6,443.19
  6. Step 6: Final answer
    x = 5,183.30

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Why These Related Problems?

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