Home / 5,143.36-7,709.64-2,540.92

Finding the Fourth Proportional to 5,143.36, 7,709.64 and 2,540.92

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Solution

The fourth proportional to 5,143.36, 7,709.64 and 2,540.92 is: 3,808.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.36 : 7,709.64 = 2,540.92 : x
  2. Step 2: Convert to fraction form
    5,143.36/7,709.64 = 2,540.92/x
  3. Step 3: Cross multiply
    5,143.36x = 7,709.64 × 2,540.92
  4. Step 4: Simplify right side
    5,143.36x = 19,589,578.47
  5. Step 5: Solve for x
    x = 19,589,578.47/5,143.36
  6. Step 6: Final answer
    x = 3,808.71

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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.