Home / 2,718.74-4,075.68-1,331.21

Finding the Fourth Proportional to 2,718.74, 4,075.68 and 1,331.21

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Solution

The fourth proportional to 2,718.74, 4,075.68 and 1,331.21 is: 1,995.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.74 : 4,075.68 = 1,331.21 : x
  2. Step 2: Convert to fraction form
    2,718.74/4,075.68 = 1,331.21/x
  3. Step 3: Cross multiply
    2,718.74x = 4,075.68 × 1,331.21
  4. Step 4: Simplify right side
    2,718.74x = 5,425,585.97
  5. Step 5: Solve for x
    x = 5,425,585.97/2,718.74
  6. Step 6: Final answer
    x = 1,995.63

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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.