Home / 2,280.29-3,418.90-1,239.41

Finding the Fourth Proportional to 2,280.29, 3,418.90 and 1,239.41

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Solution

The fourth proportional to 2,280.29, 3,418.90 and 1,239.41 is: 1,858.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.29 : 3,418.90 = 1,239.41 : x
  2. Step 2: Convert to fraction form
    2,280.29/3,418.90 = 1,239.41/x
  3. Step 3: Cross multiply
    2,280.29x = 3,418.90 × 1,239.41
  4. Step 4: Simplify right side
    2,280.29x = 4,237,427.36
  5. Step 5: Solve for x
    x = 4,237,427.36/2,280.29
  6. Step 6: Final answer
    x = 1,858.29

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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.