Home / 3,873.45-5,345.31-2,105.04

Finding the Fourth Proportional to 3,873.45, 5,345.31 and 2,105.04

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Solution

The fourth proportional to 3,873.45, 5,345.31 and 2,105.04 is: 2,904.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.45 : 5,345.31 = 2,105.04 : x
  2. Step 2: Convert to fraction form
    3,873.45/5,345.31 = 2,105.04/x
  3. Step 3: Cross multiply
    3,873.45x = 5,345.31 × 2,105.04
  4. Step 4: Simplify right side
    3,873.45x = 11,252,091.36
  5. Step 5: Solve for x
    x = 11,252,091.36/3,873.45
  6. Step 6: Final answer
    x = 2,904.93

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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.