Home / 2,812.07-3,911.66-2,758.61

Finding the Fourth Proportional to 2,812.07, 3,911.66 and 2,758.61

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Solution

The fourth proportional to 2,812.07, 3,911.66 and 2,758.61 is: 3,837.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.07 : 3,911.66 = 2,758.61 : x
  2. Step 2: Convert to fraction form
    2,812.07/3,911.66 = 2,758.61/x
  3. Step 3: Cross multiply
    2,812.07x = 3,911.66 × 2,758.61
  4. Step 4: Simplify right side
    2,812.07x = 10,790,744.39
  5. Step 5: Solve for x
    x = 10,790,744.39/2,812.07
  6. Step 6: Final answer
    x = 3,837.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.