Home / 2,717.21-4,075.83-868.34

Finding the Fourth Proportional to 2,717.21, 4,075.83 and 868.34

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Solution

The fourth proportional to 2,717.21, 4,075.83 and 868.34 is: 1,302.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.21 : 4,075.83 = 868.34 : x
  2. Step 2: Convert to fraction form
    2,717.21/4,075.83 = 868.34/x
  3. Step 3: Cross multiply
    2,717.21x = 4,075.83 × 868.34
  4. Step 4: Simplify right side
    2,717.21x = 3,539,206.22
  5. Step 5: Solve for x
    x = 3,539,206.22/2,717.21
  6. Step 6: Final answer
    x = 1,302.51

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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.