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Finding the Fourth Proportional to 8,266.88, 12,384.69 and 6,408.90

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Solution

The fourth proportional to 8,266.88, 12,384.69 and 6,408.90 is: 9,601.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,266.88 : 12,384.69 = 6,408.90 : x
  2. Step 2: Convert to fraction form
    8,266.88/12,384.69 = 6,408.90/x
  3. Step 3: Cross multiply
    8,266.88x = 12,384.69 × 6,408.90
  4. Step 4: Simplify right side
    8,266.88x = 79,372,239.74
  5. Step 5: Solve for x
    x = 79,372,239.74/8,266.88
  6. Step 6: Final answer
    x = 9,601.23

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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.