Home / 2,626.25-3,940.35-1,221.32

Finding the Fourth Proportional to 2,626.25, 3,940.35 and 1,221.32

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Solution

The fourth proportional to 2,626.25, 3,940.35 and 1,221.32 is: 1,832.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.25 : 3,940.35 = 1,221.32 : x
  2. Step 2: Convert to fraction form
    2,626.25/3,940.35 = 1,221.32/x
  3. Step 3: Cross multiply
    2,626.25x = 3,940.35 × 1,221.32
  4. Step 4: Simplify right side
    2,626.25x = 4,812,428.26
  5. Step 5: Solve for x
    x = 4,812,428.26/2,626.25
  6. Step 6: Final answer
    x = 1,832.43

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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.