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Finding the Fourth Proportional to 8,468.55, 12,706.17 and 6,131.49

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Solution

The fourth proportional to 8,468.55, 12,706.17 and 6,131.49 is: 9,199.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,468.55 : 12,706.17 = 6,131.49 : x
  2. Step 2: Convert to fraction form
    8,468.55/12,706.17 = 6,131.49/x
  3. Step 3: Cross multiply
    8,468.55x = 12,706.17 × 6,131.49
  4. Step 4: Simplify right side
    8,468.55x = 77,907,754.29
  5. Step 5: Solve for x
    x = 77,907,754.29/8,468.55
  6. Step 6: Final answer
    x = 9,199.66

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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.