Home / 2,728.08-4,092.66-1,085.40

Finding the Fourth Proportional to 2,728.08, 4,092.66 and 1,085.40

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Solution

The fourth proportional to 2,728.08, 4,092.66 and 1,085.40 is: 1,628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.08 : 4,092.66 = 1,085.40 : x
  2. Step 2: Convert to fraction form
    2,728.08/4,092.66 = 1,085.40/x
  3. Step 3: Cross multiply
    2,728.08x = 4,092.66 × 1,085.40
  4. Step 4: Simplify right side
    2,728.08x = 4,442,173.16
  5. Step 5: Solve for x
    x = 4,442,173.16/2,728.08
  6. Step 6: Final answer
    x = 1,628.31

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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.