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Finding the Fourth Proportional to 6,389.88, 9,584.90 and 2,229.98

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Solution

The fourth proportional to 6,389.88, 9,584.90 and 2,229.98 is: 3,345.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.88 : 9,584.90 = 2,229.98 : x
  2. Step 2: Convert to fraction form
    6,389.88/9,584.90 = 2,229.98/x
  3. Step 3: Cross multiply
    6,389.88x = 9,584.90 × 2,229.98
  4. Step 4: Simplify right side
    6,389.88x = 21,374,135.30
  5. Step 5: Solve for x
    x = 21,374,135.30/6,389.88
  6. Step 6: Final answer
    x = 3,345.00

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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.