Home / 3,873.87-5,345.96-2,105.48

Finding the Fourth Proportional to 3,873.87, 5,345.96 and 2,105.48

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Solution

The fourth proportional to 3,873.87, 5,345.96 and 2,105.48 is: 2,905.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.87 : 5,345.96 = 2,105.48 : x
  2. Step 2: Convert to fraction form
    3,873.87/5,345.96 = 2,105.48/x
  3. Step 3: Cross multiply
    3,873.87x = 5,345.96 × 2,105.48
  4. Step 4: Simplify right side
    3,873.87x = 11,255,814.70
  5. Step 5: Solve for x
    x = 11,255,814.70/3,873.87
  6. Step 6: Final answer
    x = 2,905.57

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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.