Home / 3,393.80-5,091.44-1,085.28

Finding the Fourth Proportional to 3,393.80, 5,091.44 and 1,085.28

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Solution

The fourth proportional to 3,393.80, 5,091.44 and 1,085.28 is: 1,628.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.80 : 5,091.44 = 1,085.28 : x
  2. Step 2: Convert to fraction form
    3,393.80/5,091.44 = 1,085.28/x
  3. Step 3: Cross multiply
    3,393.80x = 5,091.44 × 1,085.28
  4. Step 4: Simplify right side
    3,393.80x = 5,525,638.00
  5. Step 5: Solve for x
    x = 5,525,638.00/3,393.80
  6. Step 6: Final answer
    x = 1,628.16

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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.