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Finding the Fourth Proportional to 7,912.54, 11,868.79 and 3,234.74

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Solution

The fourth proportional to 7,912.54, 11,868.79 and 3,234.74 is: 4,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.54 : 11,868.79 = 3,234.74 : x
  2. Step 2: Convert to fraction form
    7,912.54/11,868.79 = 3,234.74/x
  3. Step 3: Cross multiply
    7,912.54x = 11,868.79 × 3,234.74
  4. Step 4: Simplify right side
    7,912.54x = 38,392,449.76
  5. Step 5: Solve for x
    x = 38,392,449.76/7,912.54
  6. Step 6: Final answer
    x = 4,852.10

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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.