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Finding the Fourth Proportional to 7,912.66, 11,868.99 and 2,983.41

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Solution

The fourth proportional to 7,912.66, 11,868.99 and 2,983.41 is: 4,475.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.66 : 11,868.99 = 2,983.41 : x
  2. Step 2: Convert to fraction form
    7,912.66/11,868.99 = 2,983.41/x
  3. Step 3: Cross multiply
    7,912.66x = 11,868.99 × 2,983.41
  4. Step 4: Simplify right side
    7,912.66x = 35,410,063.46
  5. Step 5: Solve for x
    x = 35,410,063.46/7,912.66
  6. Step 6: Final answer
    x = 4,475.12

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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.