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Finding the Fourth Proportional to 7,910.56, 11,859.99 and 4,789.83

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Solution

The fourth proportional to 7,910.56, 11,859.99 and 4,789.83 is: 7,181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.56 : 11,859.99 = 4,789.83 : x
  2. Step 2: Convert to fraction form
    7,910.56/11,859.99 = 4,789.83/x
  3. Step 3: Cross multiply
    7,910.56x = 11,859.99 × 4,789.83
  4. Step 4: Simplify right side
    7,910.56x = 56,807,362.41
  5. Step 5: Solve for x
    x = 56,807,362.41/7,910.56
  6. Step 6: Final answer
    x = 7,181.21

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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.