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Finding the Fourth Proportional to 7,906.20, 11,859.30 and 7,848.60

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Solution

The fourth proportional to 7,906.20, 11,859.30 and 7,848.60 is: 11,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,906.20 : 11,859.30 = 7,848.60 : x
  2. Step 2: Convert to fraction form
    7,906.20/11,859.30 = 7,848.60/x
  3. Step 3: Cross multiply
    7,906.20x = 11,859.30 × 7,848.60
  4. Step 4: Simplify right side
    7,906.20x = 93,078,901.98
  5. Step 5: Solve for x
    x = 93,078,901.98/7,906.20
  6. Step 6: Final answer
    x = 11,772.90

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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.