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Finding the Fourth Proportional to 8,855.55, 13,280.22 and 2,613.90

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Solution

The fourth proportional to 8,855.55, 13,280.22 and 2,613.90 is: 3,919.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.55 : 13,280.22 = 2,613.90 : x
  2. Step 2: Convert to fraction form
    8,855.55/13,280.22 = 2,613.90/x
  3. Step 3: Cross multiply
    8,855.55x = 13,280.22 × 2,613.90
  4. Step 4: Simplify right side
    8,855.55x = 34,713,167.06
  5. Step 5: Solve for x
    x = 34,713,167.06/8,855.55
  6. Step 6: Final answer
    x = 3,919.93

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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.