Home / 3,409.88-5,113.80-1,218.12

Finding the Fourth Proportional to 3,409.88, 5,113.80 and 1,218.12

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Solution

The fourth proportional to 3,409.88, 5,113.80 and 1,218.12 is: 1,826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.88 : 5,113.80 = 1,218.12 : x
  2. Step 2: Convert to fraction form
    3,409.88/5,113.80 = 1,218.12/x
  3. Step 3: Cross multiply
    3,409.88x = 5,113.80 × 1,218.12
  4. Step 4: Simplify right side
    3,409.88x = 6,229,222.06
  5. Step 5: Solve for x
    x = 6,229,222.06/3,409.88
  6. Step 6: Final answer
    x = 1,826.82

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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.