Home / 3,479.49-5,218.12-1,138.86

Finding the Fourth Proportional to 3,479.49, 5,218.12 and 1,138.86

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Solution

The fourth proportional to 3,479.49, 5,218.12 and 1,138.86 is: 1,707.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.49 : 5,218.12 = 1,138.86 : x
  2. Step 2: Convert to fraction form
    3,479.49/5,218.12 = 1,138.86/x
  3. Step 3: Cross multiply
    3,479.49x = 5,218.12 × 1,138.86
  4. Step 4: Simplify right side
    3,479.49x = 5,942,708.14
  5. Step 5: Solve for x
    x = 5,942,708.14/3,479.49
  6. Step 6: Final answer
    x = 1,707.93

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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.