Home / 2,558.45-3,838.79-1,243.22

Finding the Fourth Proportional to 2,558.45, 3,838.79 and 1,243.22

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Solution

The fourth proportional to 2,558.45, 3,838.79 and 1,243.22 is: 1,865.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,558.45 : 3,838.79 = 1,243.22 : x
  2. Step 2: Convert to fraction form
    2,558.45/3,838.79 = 1,243.22/x
  3. Step 3: Cross multiply
    2,558.45x = 3,838.79 × 1,243.22
  4. Step 4: Simplify right side
    2,558.45x = 4,772,435.09
  5. Step 5: Solve for x
    x = 4,772,435.09/2,558.45
  6. Step 6: Final answer
    x = 1,865.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.