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Finding the Fourth Proportional to 8,579.26, 12,858.62 and 4,421.26

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Solution

The fourth proportional to 8,579.26, 12,858.62 and 4,421.26 is: 6,626.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.26 : 12,858.62 = 4,421.26 : x
  2. Step 2: Convert to fraction form
    8,579.26/12,858.62 = 4,421.26/x
  3. Step 3: Cross multiply
    8,579.26x = 12,858.62 × 4,421.26
  4. Step 4: Simplify right side
    8,579.26x = 56,851,302.26
  5. Step 5: Solve for x
    x = 56,851,302.26/8,579.26
  6. Step 6: Final answer
    x = 6,626.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.