Home / 3,439.26-5,161.12-1,247.80

Finding the Fourth Proportional to 3,439.26, 5,161.12 and 1,247.80

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Solution

The fourth proportional to 3,439.26, 5,161.12 and 1,247.80 is: 1,872.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.26 : 5,161.12 = 1,247.80 : x
  2. Step 2: Convert to fraction form
    3,439.26/5,161.12 = 1,247.80/x
  3. Step 3: Cross multiply
    3,439.26x = 5,161.12 × 1,247.80
  4. Step 4: Simplify right side
    3,439.26x = 6,440,045.54
  5. Step 5: Solve for x
    x = 6,440,045.54/3,439.26
  6. Step 6: Final answer
    x = 1,872.51

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1.5x scale

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.