Home / 3,835.05-5,291.99-2,156.19

Finding the Fourth Proportional to 3,835.05, 5,291.99 and 2,156.19

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Solution

The fourth proportional to 3,835.05, 5,291.99 and 2,156.19 is: 2,975.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,835.05 : 5,291.99 = 2,156.19 : x
  2. Step 2: Convert to fraction form
    3,835.05/5,291.99 = 2,156.19/x
  3. Step 3: Cross multiply
    3,835.05x = 5,291.99 × 2,156.19
  4. Step 4: Simplify right side
    3,835.05x = 11,410,525.14
  5. Step 5: Solve for x
    x = 11,410,525.14/3,835.05
  6. Step 6: Final answer
    x = 2,975.33

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Half scale
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Double scale
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Similar ratio
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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.