Home / 3,186.93-4,397.18-1,911.02

Finding the Fourth Proportional to 3,186.93, 4,397.18 and 1,911.02

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Solution

The fourth proportional to 3,186.93, 4,397.18 and 1,911.02 is: 2,636.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.93 : 4,397.18 = 1,911.02 : x
  2. Step 2: Convert to fraction form
    3,186.93/4,397.18 = 1,911.02/x
  3. Step 3: Cross multiply
    3,186.93x = 4,397.18 × 1,911.02
  4. Step 4: Simplify right side
    3,186.93x = 8,403,067.38
  5. Step 5: Solve for x
    x = 8,403,067.38/3,186.93
  6. Step 6: Final answer
    x = 2,636.73

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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.