Home / 3,480.39-5,218.16-1,288.85

Finding the Fourth Proportional to 3,480.39, 5,218.16 and 1,288.85

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Solution

The fourth proportional to 3,480.39, 5,218.16 and 1,288.85 is: 1,932.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.39 : 5,218.16 = 1,288.85 : x
  2. Step 2: Convert to fraction form
    3,480.39/5,218.16 = 1,288.85/x
  3. Step 3: Cross multiply
    3,480.39x = 5,218.16 × 1,288.85
  4. Step 4: Simplify right side
    3,480.39x = 6,725,392.98
  5. Step 5: Solve for x
    x = 6,725,392.98/3,480.39
  6. Step 6: Final answer
    x = 1,932.37

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1.5x scale

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.