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Finding the Fourth Proportional to 8,589.88, 12,885.66 and 2,745.08

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Solution

The fourth proportional to 8,589.88, 12,885.66 and 2,745.08 is: 4,117.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.88 : 12,885.66 = 2,745.08 : x
  2. Step 2: Convert to fraction form
    8,589.88/12,885.66 = 2,745.08/x
  3. Step 3: Cross multiply
    8,589.88x = 12,885.66 × 2,745.08
  4. Step 4: Simplify right side
    8,589.88x = 35,372,167.55
  5. Step 5: Solve for x
    x = 35,372,167.55/8,589.88
  6. Step 6: Final answer
    x = 4,117.89

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1.5x scale

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.