Home / 3,873.68-5,345.67-2,105.29

Finding the Fourth Proportional to 3,873.68, 5,345.67 and 2,105.29

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Solution

The fourth proportional to 3,873.68, 5,345.67 and 2,105.29 is: 2,905.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.68 : 5,345.67 = 2,105.29 : x
  2. Step 2: Convert to fraction form
    3,873.68/5,345.67 = 2,105.29/x
  3. Step 3: Cross multiply
    3,873.68x = 5,345.67 × 2,105.29
  4. Step 4: Simplify right side
    3,873.68x = 11,254,188.33
  5. Step 5: Solve for x
    x = 11,254,188.33/3,873.68
  6. Step 6: Final answer
    x = 2,905.30

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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.