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Finding the Fourth Proportional to 8,007.94, 12,011.91 and 2,812.60

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Solution

The fourth proportional to 8,007.94, 12,011.91 and 2,812.60 is: 4,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,007.94 : 12,011.91 = 2,812.60 : x
  2. Step 2: Convert to fraction form
    8,007.94/12,011.91 = 2,812.60/x
  3. Step 3: Cross multiply
    8,007.94x = 12,011.91 × 2,812.60
  4. Step 4: Simplify right side
    8,007.94x = 33,784,698.07
  5. Step 5: Solve for x
    x = 33,784,698.07/8,007.94
  6. Step 6: Final answer
    x = 4,218.90

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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.