Home / 2,205.78-3,043.92-1,274.28

Finding the Fourth Proportional to 2,205.78, 3,043.92 and 1,274.28

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Solution

The fourth proportional to 2,205.78, 3,043.92 and 1,274.28 is: 1,758.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.78 : 3,043.92 = 1,274.28 : x
  2. Step 2: Convert to fraction form
    2,205.78/3,043.92 = 1,274.28/x
  3. Step 3: Cross multiply
    2,205.78x = 3,043.92 × 1,274.28
  4. Step 4: Simplify right side
    2,205.78x = 3,878,806.38
  5. Step 5: Solve for x
    x = 3,878,806.38/2,205.78
  6. Step 6: Final answer
    x = 1,758.47

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1.5x scale

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.