Home / 3,921.87-5,412.20-2,243.29

Finding the Fourth Proportional to 3,921.87, 5,412.20 and 2,243.29

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Solution

The fourth proportional to 3,921.87, 5,412.20 and 2,243.29 is: 3,095.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.87 : 5,412.20 = 2,243.29 : x
  2. Step 2: Convert to fraction form
    3,921.87/5,412.20 = 2,243.29/x
  3. Step 3: Cross multiply
    3,921.87x = 5,412.20 × 2,243.29
  4. Step 4: Simplify right side
    3,921.87x = 12,141,136.45
  5. Step 5: Solve for x
    x = 12,141,136.45/3,921.87
  6. Step 6: Final answer
    x = 3,095.75

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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.