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Finding the Fourth Proportional to 6,808.61, 10,212.92 and 1,879.67

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Solution

The fourth proportional to 6,808.61, 10,212.92 and 1,879.67 is: 2,819.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,808.61 : 10,212.92 = 1,879.67 : x
  2. Step 2: Convert to fraction form
    6,808.61/10,212.92 = 1,879.67/x
  3. Step 3: Cross multiply
    6,808.61x = 10,212.92 × 1,879.67
  4. Step 4: Simplify right side
    6,808.61x = 19,196,858.87
  5. Step 5: Solve for x
    x = 19,196,858.87/6,808.61
  6. Step 6: Final answer
    x = 2,819.50

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Double scale
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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.