Home / 5,274.09-7,911.33-1,378.38

Finding the Fourth Proportional to 5,274.09, 7,911.33 and 1,378.38

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Solution

The fourth proportional to 5,274.09, 7,911.33 and 1,378.38 is: 2,067.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.09 : 7,911.33 = 1,378.38 : x
  2. Step 2: Convert to fraction form
    5,274.09/7,911.33 = 1,378.38/x
  3. Step 3: Cross multiply
    5,274.09x = 7,911.33 × 1,378.38
  4. Step 4: Simplify right side
    5,274.09x = 10,904,819.05
  5. Step 5: Solve for x
    x = 10,904,819.05/5,274.09
  6. Step 6: Final answer
    x = 2,067.62

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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.