Home / 5,147.54-7,103.99-2,879.07

Finding the Fourth Proportional to 5,147.54, 7,103.99 and 2,879.07

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Solution

The fourth proportional to 5,147.54, 7,103.99 and 2,879.07 is: 3,973.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.54 : 7,103.99 = 2,879.07 : x
  2. Step 2: Convert to fraction form
    5,147.54/7,103.99 = 2,879.07/x
  3. Step 3: Cross multiply
    5,147.54x = 7,103.99 × 2,879.07
  4. Step 4: Simplify right side
    5,147.54x = 20,452,870.09
  5. Step 5: Solve for x
    x = 20,452,870.09/5,147.54
  6. Step 6: Final answer
    x = 3,973.33

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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.