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Finding the Fourth Proportional to 7,063.70, 9,747.99 and 3,919.88

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Solution

The fourth proportional to 7,063.70, 9,747.99 and 3,919.88 is: 5,409.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,063.70 : 9,747.99 = 3,919.88 : x
  2. Step 2: Convert to fraction form
    7,063.70/9,747.99 = 3,919.88/x
  3. Step 3: Cross multiply
    7,063.70x = 9,747.99 × 3,919.88
  4. Step 4: Simplify right side
    7,063.70x = 38,210,902.30
  5. Step 5: Solve for x
    x = 38,210,902.30/7,063.70
  6. Step 6: Final answer
    x = 5,409.48

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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.