Home / 2,717.28-4,075.20-1,255.68

Finding the Fourth Proportional to 2,717.28, 4,075.20 and 1,255.68

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Solution

The fourth proportional to 2,717.28, 4,075.20 and 1,255.68 is: 1,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.28 : 4,075.20 = 1,255.68 : x
  2. Step 2: Convert to fraction form
    2,717.28/4,075.20 = 1,255.68/x
  3. Step 3: Cross multiply
    2,717.28x = 4,075.20 × 1,255.68
  4. Step 4: Simplify right side
    2,717.28x = 5,117,147.14
  5. Step 5: Solve for x
    x = 5,117,147.14/2,717.28
  6. Step 6: Final answer
    x = 1,883.19

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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.