Home / 4,138.08-6,208.20-1,831.20

Finding the Fourth Proportional to 4,138.08, 6,208.20 and 1,831.20

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Solution

The fourth proportional to 4,138.08, 6,208.20 and 1,831.20 is: 2,747.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.08 : 6,208.20 = 1,831.20 : x
  2. Step 2: Convert to fraction form
    4,138.08/6,208.20 = 1,831.20/x
  3. Step 3: Cross multiply
    4,138.08x = 6,208.20 × 1,831.20
  4. Step 4: Simplify right side
    4,138.08x = 11,368,455.84
  5. Step 5: Solve for x
    x = 11,368,455.84/4,138.08
  6. Step 6: Final answer
    x = 2,747.28

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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.