Home / 4,138.72-6,169.09-3,806.57

Finding the Fourth Proportional to 4,138.72, 6,169.09 and 3,806.57

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Solution

The fourth proportional to 4,138.72, 6,169.09 and 3,806.57 is: 5,673.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.72 : 6,169.09 = 3,806.57 : x
  2. Step 2: Convert to fraction form
    4,138.72/6,169.09 = 3,806.57/x
  3. Step 3: Cross multiply
    4,138.72x = 6,169.09 × 3,806.57
  4. Step 4: Simplify right side
    4,138.72x = 23,483,044.13
  5. Step 5: Solve for x
    x = 23,483,044.13/4,138.72
  6. Step 6: Final answer
    x = 5,673.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.