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Finding the Fourth Proportional to 6,437.40, 8,884.18 and 3,918.90

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Solution

The fourth proportional to 6,437.40, 8,884.18 and 3,918.90 is: 5,408.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,437.40 : 8,884.18 = 3,918.90 : x
  2. Step 2: Convert to fraction form
    6,437.40/8,884.18 = 3,918.90/x
  3. Step 3: Cross multiply
    6,437.40x = 8,884.18 × 3,918.90
  4. Step 4: Simplify right side
    6,437.40x = 34,816,213.00
  5. Step 5: Solve for x
    x = 34,816,213.00/6,437.40
  6. Step 6: Final answer
    x = 5,408.43

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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.