Home / 8,136.32-12,207.84-4,185.28

Finding the Fourth Proportional to 8,136.32, 12,207.84 and 4,185.28

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Solution

The fourth proportional to 8,136.32, 12,207.84 and 4,185.28 is: 6,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.32 : 12,207.84 = 4,185.28 : x
  2. Step 2: Convert to fraction form
    8,136.32/12,207.84 = 4,185.28/x
  3. Step 3: Cross multiply
    8,136.32x = 12,207.84 × 4,185.28
  4. Step 4: Simplify right side
    8,136.32x = 51,093,228.60
  5. Step 5: Solve for x
    x = 51,093,228.60/8,136.32
  6. Step 6: Final answer
    x = 6,279.65

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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.