Home / 3,806.50-5,709.57-1,209.10

Finding the Fourth Proportional to 3,806.50, 5,709.57 and 1,209.10

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Solution

The fourth proportional to 3,806.50, 5,709.57 and 1,209.10 is: 1,813.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806.50 : 5,709.57 = 1,209.10 : x
  2. Step 2: Convert to fraction form
    3,806.50/5,709.57 = 1,209.10/x
  3. Step 3: Cross multiply
    3,806.50x = 5,709.57 × 1,209.10
  4. Step 4: Simplify right side
    3,806.50x = 6,903,441.09
  5. Step 5: Solve for x
    x = 6,903,441.09/3,806.50
  6. Step 6: Final answer
    x = 1,813.59

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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.