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Finding the Fourth Proportional to 8,443.75, 12,665.63 and 2,287.75

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Solution

The fourth proportional to 8,443.75, 12,665.63 and 2,287.75 is: 3,431.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,443.75 : 12,665.63 = 2,287.75 : x
  2. Step 2: Convert to fraction form
    8,443.75/12,665.63 = 2,287.75/x
  3. Step 3: Cross multiply
    8,443.75x = 12,665.63 × 2,287.75
  4. Step 4: Simplify right side
    8,443.75x = 28,975,795.03
  5. Step 5: Solve for x
    x = 28,975,795.03/8,443.75
  6. Step 6: Final answer
    x = 3,431.63

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Similar ratio
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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.