Home / 8,619.62-12,918.98-3,933.21

Finding the Fourth Proportional to 8,619.62, 12,918.98 and 3,933.21

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Solution

The fourth proportional to 8,619.62, 12,918.98 and 3,933.21 is: 5,895.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.62 : 12,918.98 = 3,933.21 : x
  2. Step 2: Convert to fraction form
    8,619.62/12,918.98 = 3,933.21/x
  3. Step 3: Cross multiply
    8,619.62x = 12,918.98 × 3,933.21
  4. Step 4: Simplify right side
    8,619.62x = 50,812,977.06
  5. Step 5: Solve for x
    x = 50,812,977.06/8,619.62
  6. Step 6: Final answer
    x = 5,895.04

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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.