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Finding the Fourth Proportional to 8,000.09, 12,000.12 and 2,156.69

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Solution

The fourth proportional to 8,000.09, 12,000.12 and 2,156.69 is: 3,235.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,000.09 : 12,000.12 = 2,156.69 : x
  2. Step 2: Convert to fraction form
    8,000.09/12,000.12 = 2,156.69/x
  3. Step 3: Cross multiply
    8,000.09x = 12,000.12 × 2,156.69
  4. Step 4: Simplify right side
    8,000.09x = 25,880,478.80
  5. Step 5: Solve for x
    x = 25,880,478.80/8,000.09
  6. Step 6: Final answer
    x = 3,235.03

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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.