Home / 2,718.23-4,075.35-868.28

Finding the Fourth Proportional to 2,718.23, 4,075.35 and 868.28

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Solution

The fourth proportional to 2,718.23, 4,075.35 and 868.28 is: 1,301.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.23 : 4,075.35 = 868.28 : x
  2. Step 2: Convert to fraction form
    2,718.23/4,075.35 = 868.28/x
  3. Step 3: Cross multiply
    2,718.23x = 4,075.35 × 868.28
  4. Step 4: Simplify right side
    2,718.23x = 3,538,544.90
  5. Step 5: Solve for x
    x = 3,538,544.90/2,718.23
  6. Step 6: Final answer
    x = 1,301.78

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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.