Home / 3,876.12-5,814.05-1,279.04

Finding the Fourth Proportional to 3,876.12, 5,814.05 and 1,279.04

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Solution

The fourth proportional to 3,876.12, 5,814.05 and 1,279.04 is: 1,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.12 : 5,814.05 = 1,279.04 : x
  2. Step 2: Convert to fraction form
    3,876.12/5,814.05 = 1,279.04/x
  3. Step 3: Cross multiply
    3,876.12x = 5,814.05 × 1,279.04
  4. Step 4: Simplify right side
    3,876.12x = 7,436,367.05
  5. Step 5: Solve for x
    x = 7,436,367.05/3,876.12
  6. Step 6: Final answer
    x = 1,918.51

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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.