Home / 1,179.72-1,629.84-1,097.76

Finding the Fourth Proportional to 1,179.72, 1,629.84 and 1,097.76

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Solution

The fourth proportional to 1,179.72, 1,629.84 and 1,097.76 is: 1,516.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.72 : 1,629.84 = 1,097.76 : x
  2. Step 2: Convert to fraction form
    1,179.72/1,629.84 = 1,097.76/x
  3. Step 3: Cross multiply
    1,179.72x = 1,629.84 × 1,097.76
  4. Step 4: Simplify right side
    1,179.72x = 1,789,173.16
  5. Step 5: Solve for x
    x = 1,789,173.16/1,179.72
  6. Step 6: Final answer
    x = 1,516.61

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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.