Home / 1,889.90-2,829.39-1,231.07

Finding the Fourth Proportional to 1,889.90, 2,829.39 and 1,231.07

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Solution

The fourth proportional to 1,889.90, 2,829.39 and 1,231.07 is: 1,843.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.90 : 2,829.39 = 1,231.07 : x
  2. Step 2: Convert to fraction form
    1,889.90/2,829.39 = 1,231.07/x
  3. Step 3: Cross multiply
    1,889.90x = 2,829.39 × 1,231.07
  4. Step 4: Simplify right side
    1,889.90x = 3,483,168.99
  5. Step 5: Solve for x
    x = 3,483,168.99/1,889.90
  6. Step 6: Final answer
    x = 1,843.04

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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.