Home / 2,290.95-3,161.57-1,243.04

Finding the Fourth Proportional to 2,290.95, 3,161.57 and 1,243.04

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Solution

The fourth proportional to 2,290.95, 3,161.57 and 1,243.04 is: 1,715.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.95 : 3,161.57 = 1,243.04 : x
  2. Step 2: Convert to fraction form
    2,290.95/3,161.57 = 1,243.04/x
  3. Step 3: Cross multiply
    2,290.95x = 3,161.57 × 1,243.04
  4. Step 4: Simplify right side
    2,290.95x = 3,929,935.95
  5. Step 5: Solve for x
    x = 3,929,935.95/2,290.95
  6. Step 6: Final answer
    x = 1,715.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.