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Finding the Fourth Proportional to 8,679.44, 13,005.52 and 6,709.90

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Solution

The fourth proportional to 8,679.44, 13,005.52 and 6,709.90 is: 10,054.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.44 : 13,005.52 = 6,709.90 : x
  2. Step 2: Convert to fraction form
    8,679.44/13,005.52 = 6,709.90/x
  3. Step 3: Cross multiply
    8,679.44x = 13,005.52 × 6,709.90
  4. Step 4: Simplify right side
    8,679.44x = 87,265,738.65
  5. Step 5: Solve for x
    x = 87,265,738.65/8,679.44
  6. Step 6: Final answer
    x = 10,054.31

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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.