Home / 2,806.88-3,873.32-1,687.16

Finding the Fourth Proportional to 2,806.88, 3,873.32 and 1,687.16

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Solution

The fourth proportional to 2,806.88, 3,873.32 and 1,687.16 is: 2,328.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.88 : 3,873.32 = 1,687.16 : x
  2. Step 2: Convert to fraction form
    2,806.88/3,873.32 = 1,687.16/x
  3. Step 3: Cross multiply
    2,806.88x = 3,873.32 × 1,687.16
  4. Step 4: Simplify right side
    2,806.88x = 6,534,910.57
  5. Step 5: Solve for x
    x = 6,534,910.57/2,806.88
  6. Step 6: Final answer
    x = 2,328.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.