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Finding the Fourth Proportional to 4,609.85, 6,918.48 and 2,419.88

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Solution

The fourth proportional to 4,609.85, 6,918.48 and 2,419.88 is: 3,631.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,609.85 : 6,918.48 = 2,419.88 : x
  2. Step 2: Convert to fraction form
    4,609.85/6,918.48 = 2,419.88/x
  3. Step 3: Cross multiply
    4,609.85x = 6,918.48 × 2,419.88
  4. Step 4: Simplify right side
    4,609.85x = 16,741,856.79
  5. Step 5: Solve for x
    x = 16,741,856.79/4,609.85
  6. Step 6: Final answer
    x = 3,631.76

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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.