Home / 1,320.27-1,821.86-1,179.94

Finding the Fourth Proportional to 1,320.27, 1,821.86 and 1,179.94

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Solution

The fourth proportional to 1,320.27, 1,821.86 and 1,179.94 is: 1,628.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320.27 : 1,821.86 = 1,179.94 : x
  2. Step 2: Convert to fraction form
    1,320.27/1,821.86 = 1,179.94/x
  3. Step 3: Cross multiply
    1,320.27x = 1,821.86 × 1,179.94
  4. Step 4: Simplify right side
    1,320.27x = 2,149,676.38
  5. Step 5: Solve for x
    x = 2,149,676.38/1,320.27
  6. Step 6: Final answer
    x = 1,628.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.