Home / 1,228.25-1,839.91-610.09

Finding the Fourth Proportional to 1,228.25, 1,839.91 and 610.09

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Solution

The fourth proportional to 1,228.25, 1,839.91 and 610.09 is: 913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.25 : 1,839.91 = 610.09 : x
  2. Step 2: Convert to fraction form
    1,228.25/1,839.91 = 610.09/x
  3. Step 3: Cross multiply
    1,228.25x = 1,839.91 × 610.09
  4. Step 4: Simplify right side
    1,228.25x = 1,122,501.49
  5. Step 5: Solve for x
    x = 1,122,501.49/1,228.25
  6. Step 6: Final answer
    x = 913.90

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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.