Home / 3,873.62-5,345.55-2,105.19

Finding the Fourth Proportional to 3,873.62, 5,345.55 and 2,105.19

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Solution

The fourth proportional to 3,873.62, 5,345.55 and 2,105.19 is: 2,905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.62 : 5,345.55 = 2,105.19 : x
  2. Step 2: Convert to fraction form
    3,873.62/5,345.55 = 2,105.19/x
  3. Step 3: Cross multiply
    3,873.62x = 5,345.55 × 2,105.19
  4. Step 4: Simplify right side
    3,873.62x = 11,253,398.40
  5. Step 5: Solve for x
    x = 11,253,398.40/3,873.62
  6. Step 6: Final answer
    x = 2,905.14

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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.