Home / 3,613.40-5,409.30-3,399.80

Finding the Fourth Proportional to 3,613.40, 5,409.30 and 3,399.80

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Solution

The fourth proportional to 3,613.40, 5,409.30 and 3,399.80 is: 5,089.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.40 : 5,409.30 = 3,399.80 : x
  2. Step 2: Convert to fraction form
    3,613.40/5,409.30 = 3,399.80/x
  3. Step 3: Cross multiply
    3,613.40x = 5,409.30 × 3,399.80
  4. Step 4: Simplify right side
    3,613.40x = 18,390,538.14
  5. Step 5: Solve for x
    x = 18,390,538.14/3,613.40
  6. Step 6: Final answer
    x = 5,089.54

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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.