Home / 3,873.47-5,345.39-2,105.09

Finding the Fourth Proportional to 3,873.47, 5,345.39 and 2,105.09

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Solution

The fourth proportional to 3,873.47, 5,345.39 and 2,105.09 is: 2,905.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.47 : 5,345.39 = 2,105.09 : x
  2. Step 2: Convert to fraction form
    3,873.47/5,345.39 = 2,105.09/x
  3. Step 3: Cross multiply
    3,873.47x = 5,345.39 × 2,105.09
  4. Step 4: Simplify right side
    3,873.47x = 11,252,525.62
  5. Step 5: Solve for x
    x = 11,252,525.62/3,873.47
  6. Step 6: Final answer
    x = 2,905.02

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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.