Home / 2,718.45-4,069.95-1,791.21

Finding the Fourth Proportional to 2,718.45, 4,069.95 and 1,791.21

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Solution

The fourth proportional to 2,718.45, 4,069.95 and 1,791.21 is: 2,681.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.45 : 4,069.95 = 1,791.21 : x
  2. Step 2: Convert to fraction form
    2,718.45/4,069.95 = 1,791.21/x
  3. Step 3: Cross multiply
    2,718.45x = 4,069.95 × 1,791.21
  4. Step 4: Simplify right side
    2,718.45x = 7,290,135.14
  5. Step 5: Solve for x
    x = 7,290,135.14/2,718.45
  6. Step 6: Final answer
    x = 2,681.72

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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.