Home / 8,137.24-12,209.94-3,210.40

Finding the Fourth Proportional to 8,137.24, 12,209.94 and 3,210.40

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Solution

The fourth proportional to 8,137.24, 12,209.94 and 3,210.40 is: 4,817.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.24 : 12,209.94 = 3,210.40 : x
  2. Step 2: Convert to fraction form
    8,137.24/12,209.94 = 3,210.40/x
  3. Step 3: Cross multiply
    8,137.24x = 12,209.94 × 3,210.40
  4. Step 4: Simplify right side
    8,137.24x = 39,198,791.38
  5. Step 5: Solve for x
    x = 39,198,791.38/8,137.24
  6. Step 6: Final answer
    x = 4,817.21

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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.