Home / 3,409.37-5,111.28-1,328.30

Finding the Fourth Proportional to 3,409.37, 5,111.28 and 1,328.30

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Solution

The fourth proportional to 3,409.37, 5,111.28 and 1,328.30 is: 1,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,409.37 : 5,111.28 = 1,328.30 : x
  2. Step 2: Convert to fraction form
    3,409.37/5,111.28 = 1,328.30/x
  3. Step 3: Cross multiply
    3,409.37x = 5,111.28 × 1,328.30
  4. Step 4: Simplify right side
    3,409.37x = 6,789,287.67
  5. Step 5: Solve for x
    x = 6,789,287.67/3,409.37
  6. Step 6: Final answer
    x = 1,991.36

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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.