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Finding the Fourth Proportional to 8,318.63, 12,443.73 and 7,588.70

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Solution

The fourth proportional to 8,318.63, 12,443.73 and 7,588.70 is: 11,351.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.63 : 12,443.73 = 7,588.70 : x
  2. Step 2: Convert to fraction form
    8,318.63/12,443.73 = 7,588.70/x
  3. Step 3: Cross multiply
    8,318.63x = 12,443.73 × 7,588.70
  4. Step 4: Simplify right side
    8,318.63x = 94,431,671.63
  5. Step 5: Solve for x
    x = 94,431,671.63/8,318.63
  6. Step 6: Final answer
    x = 11,351.84

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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.