Home / 3,409.34-5,115.00-1,218.24

Finding the Fourth Proportional to 3,409.34, 5,115.00 and 1,218.24

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Solution

The fourth proportional to 3,409.34, 5,115.00 and 1,218.24 is: 1,827.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.34 : 5,115.00 = 1,218.24 : x
  2. Step 2: Convert to fraction form
    3,409.34/5,115.00 = 1,218.24/x
  3. Step 3: Cross multiply
    3,409.34x = 5,115.00 × 1,218.24
  4. Step 4: Simplify right side
    3,409.34x = 6,231,295.32
  5. Step 5: Solve for x
    x = 6,231,295.32/3,409.34
  6. Step 6: Final answer
    x = 1,827.71

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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.