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Finding the Fourth Proportional to 2,186.74, 3,017.66 and 1,192

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Solution

The fourth proportional to 2,186.74, 3,017.66 and 1,192 is: 1,644.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.74 : 3,017.66 = 1,192 : x
  2. Step 2: Convert to fraction form
    2,186.74/3,017.66 = 1,192/x
  3. Step 3: Cross multiply
    2,186.74x = 3,017.66 × 1,192
  4. Step 4: Simplify right side
    2,186.74x = 3,597,050.72
  5. Step 5: Solve for x
    x = 3,597,050.72/2,186.74
  6. Step 6: Final answer
    x = 1,644.94

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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.