Home / 3,540.78-4,886.33-1,968.91

Finding the Fourth Proportional to 3,540.78, 4,886.33 and 1,968.91

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Solution

The fourth proportional to 3,540.78, 4,886.33 and 1,968.91 is: 2,717.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.78 : 4,886.33 = 1,968.91 : x
  2. Step 2: Convert to fraction form
    3,540.78/4,886.33 = 1,968.91/x
  3. Step 3: Cross multiply
    3,540.78x = 4,886.33 × 1,968.91
  4. Step 4: Simplify right side
    3,540.78x = 9,620,721.94
  5. Step 5: Solve for x
    x = 9,620,721.94/3,540.78
  6. Step 6: Final answer
    x = 2,717.12

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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.