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Finding the Fourth Proportional to 8,318.45, 12,412.22 and 8,036.57

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Solution

The fourth proportional to 8,318.45, 12,412.22 and 8,036.57 is: 11,991.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.45 : 12,412.22 = 8,036.57 : x
  2. Step 2: Convert to fraction form
    8,318.45/12,412.22 = 8,036.57/x
  3. Step 3: Cross multiply
    8,318.45x = 12,412.22 × 8,036.57
  4. Step 4: Simplify right side
    8,318.45x = 99,751,572.64
  5. Step 5: Solve for x
    x = 99,751,572.64/8,318.45
  6. Step 6: Final answer
    x = 11,991.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.