Home / 3,409.56-5,115.26-1,218.46

Finding the Fourth Proportional to 3,409.56, 5,115.26 and 1,218.46

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Solution

The fourth proportional to 3,409.56, 5,115.26 and 1,218.46 is: 1,828.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.56 : 5,115.26 = 1,218.46 : x
  2. Step 2: Convert to fraction form
    3,409.56/5,115.26 = 1,218.46/x
  3. Step 3: Cross multiply
    3,409.56x = 5,115.26 × 1,218.46
  4. Step 4: Simplify right side
    3,409.56x = 6,232,739.70
  5. Step 5: Solve for x
    x = 6,232,739.70/3,409.56
  6. Step 6: Final answer
    x = 1,828.02

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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.