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Finding the Fourth Proportional to 5,617, 8,431.98 and 2,539

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Solution

The fourth proportional to 5,617, 8,431.98 and 2,539 is: 3,811.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,617 : 8,431.98 = 2,539 : x
  2. Step 2: Convert to fraction form
    5,617/8,431.98 = 2,539/x
  3. Step 3: Cross multiply
    5,617x = 8,431.98 × 2,539
  4. Step 4: Simplify right side
    5,617x = 21,408,797.22
  5. Step 5: Solve for x
    x = 21,408,797.22/5,617
  6. Step 6: Final answer
    x = 3,811.43

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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.