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Finding the Fourth Proportional to 1,369.74, 2,052.71 and 1,186.68

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Solution

The fourth proportional to 1,369.74, 2,052.71 and 1,186.68 is: 1,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.74 : 2,052.71 = 1,186.68 : x
  2. Step 2: Convert to fraction form
    1,369.74/2,052.71 = 1,186.68/x
  3. Step 3: Cross multiply
    1,369.74x = 2,052.71 × 1,186.68
  4. Step 4: Simplify right side
    1,369.74x = 2,435,903.97
  5. Step 5: Solve for x
    x = 2,435,903.97/1,369.74
  6. Step 6: Final answer
    x = 1,778.37

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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.