Home / 5,238.15-7,228.38-2,879.84

Finding the Fourth Proportional to 5,238.15, 7,228.38 and 2,879.84

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Solution

The fourth proportional to 5,238.15, 7,228.38 and 2,879.84 is: 3,974.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.15 : 7,228.38 = 2,879.84 : x
  2. Step 2: Convert to fraction form
    5,238.15/7,228.38 = 2,879.84/x
  3. Step 3: Cross multiply
    5,238.15x = 7,228.38 × 2,879.84
  4. Step 4: Simplify right side
    5,238.15x = 20,816,527.32
  5. Step 5: Solve for x
    x = 20,816,527.32/5,238.15
  6. Step 6: Final answer
    x = 3,974.02

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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.