Home / 5,138.12-7,703.94-2,831.24

Finding the Fourth Proportional to 5,138.12, 7,703.94 and 2,831.24

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Solution

The fourth proportional to 5,138.12, 7,703.94 and 2,831.24 is: 4,245.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.12 : 7,703.94 = 2,831.24 : x
  2. Step 2: Convert to fraction form
    5,138.12/7,703.94 = 2,831.24/x
  3. Step 3: Cross multiply
    5,138.12x = 7,703.94 × 2,831.24
  4. Step 4: Simplify right side
    5,138.12x = 21,811,703.09
  5. Step 5: Solve for x
    x = 21,811,703.09/5,138.12
  6. Step 6: Final answer
    x = 4,245.07

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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.