Home / 2,816.24-3,886.68-1,637.84

Finding the Fourth Proportional to 2,816.24, 3,886.68 and 1,637.84

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Solution

The fourth proportional to 2,816.24, 3,886.68 and 1,637.84 is: 2,260.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.24 : 3,886.68 = 1,637.84 : x
  2. Step 2: Convert to fraction form
    2,816.24/3,886.68 = 1,637.84/x
  3. Step 3: Cross multiply
    2,816.24x = 3,886.68 × 1,637.84
  4. Step 4: Simplify right side
    2,816.24x = 6,365,759.97
  5. Step 5: Solve for x
    x = 6,365,759.97/2,816.24
  6. Step 6: Final answer
    x = 2,260.38

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Half scale
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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.