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Finding the Fourth Proportional to 4,789.67, 6,609.15 and 2,798.78

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Solution

The fourth proportional to 4,789.67, 6,609.15 and 2,798.78 is: 3,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.67 : 6,609.15 = 2,798.78 : x
  2. Step 2: Convert to fraction form
    4,789.67/6,609.15 = 2,798.78/x
  3. Step 3: Cross multiply
    4,789.67x = 6,609.15 × 2,798.78
  4. Step 4: Simplify right side
    4,789.67x = 18,497,523.79
  5. Step 5: Solve for x
    x = 18,497,523.79/4,789.67
  6. Step 6: Final answer
    x = 3,861.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.