Home / 2,728.67-4,083.75-1,689.35

Finding the Fourth Proportional to 2,728.67, 4,083.75 and 1,689.35

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Solution

The fourth proportional to 2,728.67, 4,083.75 and 1,689.35 is: 2,528.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.67 : 4,083.75 = 1,689.35 : x
  2. Step 2: Convert to fraction form
    2,728.67/4,083.75 = 1,689.35/x
  3. Step 3: Cross multiply
    2,728.67x = 4,083.75 × 1,689.35
  4. Step 4: Simplify right side
    2,728.67x = 6,898,862.64
  5. Step 5: Solve for x
    x = 6,898,862.64/2,728.67
  6. Step 6: Final answer
    x = 2,528.29

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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.