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Finding the Fourth Proportional to 8,814.34, 13,221.42 and 2,658.34

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Solution

The fourth proportional to 8,814.34, 13,221.42 and 2,658.34 is: 3,987.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,814.34 : 13,221.42 = 2,658.34 : x
  2. Step 2: Convert to fraction form
    8,814.34/13,221.42 = 2,658.34/x
  3. Step 3: Cross multiply
    8,814.34x = 13,221.42 × 2,658.34
  4. Step 4: Simplify right side
    8,814.34x = 35,147,029.64
  5. Step 5: Solve for x
    x = 35,147,029.64/8,814.34
  6. Step 6: Final answer
    x = 3,987.48

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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.