Home / 5,147.91-7,104.12-2,790.05

Finding the Fourth Proportional to 5,147.91, 7,104.12 and 2,790.05

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Solution

The fourth proportional to 5,147.91, 7,104.12 and 2,790.05 is: 3,850.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.91 : 7,104.12 = 2,790.05 : x
  2. Step 2: Convert to fraction form
    5,147.91/7,104.12 = 2,790.05/x
  3. Step 3: Cross multiply
    5,147.91x = 7,104.12 × 2,790.05
  4. Step 4: Simplify right side
    5,147.91x = 19,820,859.68
  5. Step 5: Solve for x
    x = 19,820,859.68/5,147.91
  6. Step 6: Final answer
    x = 3,850.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.