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Finding the Fourth Proportional to 9,879.12, 14,818.68 and 3,958.69

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Solution

The fourth proportional to 9,879.12, 14,818.68 and 3,958.69 is: 5,938.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.12 : 14,818.68 = 3,958.69 : x
  2. Step 2: Convert to fraction form
    9,879.12/14,818.68 = 3,958.69/x
  3. Step 3: Cross multiply
    9,879.12x = 14,818.68 × 3,958.69
  4. Step 4: Simplify right side
    9,879.12x = 58,662,560.33
  5. Step 5: Solve for x
    x = 58,662,560.33/9,879.12
  6. Step 6: Final answer
    x = 5,938.04

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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.