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Finding the Fourth Proportional to 6,939.40, 9,554.18 and 6,179.56

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Solution

The fourth proportional to 6,939.40, 9,554.18 and 6,179.56 is: 8,508.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.40 : 9,554.18 = 6,179.56 : x
  2. Step 2: Convert to fraction form
    6,939.40/9,554.18 = 6,179.56/x
  3. Step 3: Cross multiply
    6,939.40x = 9,554.18 × 6,179.56
  4. Step 4: Simplify right side
    6,939.40x = 59,040,628.56
  5. Step 5: Solve for x
    x = 59,040,628.56/6,939.40
  6. Step 6: Final answer
    x = 8,508.03

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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.