Home / 1,180.11-1,769.94-1,121.58

Finding the Fourth Proportional to 1,180.11, 1,769.94 and 1,121.58

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Solution

The fourth proportional to 1,180.11, 1,769.94 and 1,121.58 is: 1,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.11 : 1,769.94 = 1,121.58 : x
  2. Step 2: Convert to fraction form
    1,180.11/1,769.94 = 1,121.58/x
  3. Step 3: Cross multiply
    1,180.11x = 1,769.94 × 1,121.58
  4. Step 4: Simplify right side
    1,180.11x = 1,985,129.31
  5. Step 5: Solve for x
    x = 1,985,129.31/1,180.11
  6. Step 6: Final answer
    x = 1,682.16

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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.