Home / 8,157.87-12,238.61-2,611.67

Finding the Fourth Proportional to 8,157.87, 12,238.61 and 2,611.67

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Solution

The fourth proportional to 8,157.87, 12,238.61 and 2,611.67 is: 3,918.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.87 : 12,238.61 = 2,611.67 : x
  2. Step 2: Convert to fraction form
    8,157.87/12,238.61 = 2,611.67/x
  3. Step 3: Cross multiply
    8,157.87x = 12,238.61 × 2,611.67
  4. Step 4: Simplify right side
    8,157.87x = 31,963,136.33
  5. Step 5: Solve for x
    x = 31,963,136.33/8,157.87
  6. Step 6: Final answer
    x = 3,918.07

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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.