Home / 2,068.20-2,857.14-1,912.68

Finding the Fourth Proportional to 2,068.20, 2,857.14 and 1,912.68

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Solution

The fourth proportional to 2,068.20, 2,857.14 and 1,912.68 is: 2,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,068.20 : 2,857.14 = 1,912.68 : x
  2. Step 2: Convert to fraction form
    2,068.20/2,857.14 = 1,912.68/x
  3. Step 3: Cross multiply
    2,068.20x = 2,857.14 × 1,912.68
  4. Step 4: Simplify right side
    2,068.20x = 5,464,794.54
  5. Step 5: Solve for x
    x = 5,464,794.54/2,068.20
  6. Step 6: Final answer
    x = 2,642.30

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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.