Home / 2,834.28-3,911.79-1,639.06

Finding the Fourth Proportional to 2,834.28, 3,911.79 and 1,639.06

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Solution

The fourth proportional to 2,834.28, 3,911.79 and 1,639.06 is: 2,262.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,834.28 : 3,911.79 = 1,639.06 : x
  2. Step 2: Convert to fraction form
    2,834.28/3,911.79 = 1,639.06/x
  3. Step 3: Cross multiply
    2,834.28x = 3,911.79 × 1,639.06
  4. Step 4: Simplify right side
    2,834.28x = 6,411,673.51
  5. Step 5: Solve for x
    x = 6,411,673.51/2,834.28
  6. Step 6: Final answer
    x = 2,262.18

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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.