Home / 3,185.72-4,397.48-2,790.44

Finding the Fourth Proportional to 3,185.72, 4,397.48 and 2,790.44

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Solution

The fourth proportional to 3,185.72, 4,397.48 and 2,790.44 is: 3,851.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.72 : 4,397.48 = 2,790.44 : x
  2. Step 2: Convert to fraction form
    3,185.72/4,397.48 = 2,790.44/x
  3. Step 3: Cross multiply
    3,185.72x = 4,397.48 × 2,790.44
  4. Step 4: Simplify right side
    3,185.72x = 12,270,904.09
  5. Step 5: Solve for x
    x = 12,270,904.09/3,185.72
  6. Step 6: Final answer
    x = 3,851.85

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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.