Home / 1,838.30-2,755.62-1,220.47

Finding the Fourth Proportional to 1,838.30, 2,755.62 and 1,220.47

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Solution

The fourth proportional to 1,838.30, 2,755.62 and 1,220.47 is: 1,829.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.30 : 2,755.62 = 1,220.47 : x
  2. Step 2: Convert to fraction form
    1,838.30/2,755.62 = 1,220.47/x
  3. Step 3: Cross multiply
    1,838.30x = 2,755.62 × 1,220.47
  4. Step 4: Simplify right side
    1,838.30x = 3,363,144.65
  5. Step 5: Solve for x
    x = 3,363,144.65/1,838.30
  6. Step 6: Final answer
    x = 1,829.49

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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.