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Finding the Fourth Proportional to 7,063.50, 9,747.94 and 3,919.69

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Solution

The fourth proportional to 7,063.50, 9,747.94 and 3,919.69 is: 5,409.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,063.50 : 9,747.94 = 3,919.69 : x
  2. Step 2: Convert to fraction form
    7,063.50/9,747.94 = 3,919.69/x
  3. Step 3: Cross multiply
    7,063.50x = 9,747.94 × 3,919.69
  4. Step 4: Simplify right side
    7,063.50x = 38,208,858.97
  5. Step 5: Solve for x
    x = 38,208,858.97/7,063.50
  6. Step 6: Final answer
    x = 5,409.34

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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.