Home / 3,873.42-5,345.12-2,105.02

Finding the Fourth Proportional to 3,873.42, 5,345.12 and 2,105.02

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Solution

The fourth proportional to 3,873.42, 5,345.12 and 2,105.02 is: 2,904.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.42 : 5,345.12 = 2,105.02 : x
  2. Step 2: Convert to fraction form
    3,873.42/5,345.12 = 2,105.02/x
  3. Step 3: Cross multiply
    3,873.42x = 5,345.12 × 2,105.02
  4. Step 4: Simplify right side
    3,873.42x = 11,251,584.50
  5. Step 5: Solve for x
    x = 11,251,584.50/3,873.42
  6. Step 6: Final answer
    x = 2,904.82

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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.