Home / 3,409.14-5,115.09-1,329.30

Finding the Fourth Proportional to 3,409.14, 5,115.09 and 1,329.30

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Solution

The fourth proportional to 3,409.14, 5,115.09 and 1,329.30 is: 1,994.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.14 : 5,115.09 = 1,329.30 : x
  2. Step 2: Convert to fraction form
    3,409.14/5,115.09 = 1,329.30/x
  3. Step 3: Cross multiply
    3,409.14x = 5,115.09 × 1,329.30
  4. Step 4: Simplify right side
    3,409.14x = 6,799,489.14
  5. Step 5: Solve for x
    x = 6,799,489.14/3,409.14
  6. Step 6: Final answer
    x = 1,994.49

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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.