Home / 3,409.59-5,110.94-1,328.30

Finding the Fourth Proportional to 3,409.59, 5,110.94 and 1,328.30

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Solution

The fourth proportional to 3,409.59, 5,110.94 and 1,328.30 is: 1,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.59 : 5,110.94 = 1,328.30 : x
  2. Step 2: Convert to fraction form
    3,409.59/5,110.94 = 1,328.30/x
  3. Step 3: Cross multiply
    3,409.59x = 5,110.94 × 1,328.30
  4. Step 4: Simplify right side
    3,409.59x = 6,788,829.41
  5. Step 5: Solve for x
    x = 6,788,829.41/3,409.59
  6. Step 6: Final answer
    x = 1,991.10

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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.