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Finding the Fourth Proportional to 8,468.60, 12,674.10 and 7,431.80

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Solution

The fourth proportional to 8,468.60, 12,674.10 and 7,431.80 is: 11,122.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,468.60 : 12,674.10 = 7,431.80 : x
  2. Step 2: Convert to fraction form
    8,468.60/12,674.10 = 7,431.80/x
  3. Step 3: Cross multiply
    8,468.60x = 12,674.10 × 7,431.80
  4. Step 4: Simplify right side
    8,468.60x = 94,191,376.38
  5. Step 5: Solve for x
    x = 94,191,376.38/8,468.60
  6. Step 6: Final answer
    x = 11,122.43

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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.