Home / 2,187.11-3,018.13-1,192.37

Finding the Fourth Proportional to 2,187.11, 3,018.13 and 1,192.37

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Solution

The fourth proportional to 2,187.11, 3,018.13 and 1,192.37 is: 1,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.11 : 3,018.13 = 1,192.37 : x
  2. Step 2: Convert to fraction form
    2,187.11/3,018.13 = 1,192.37/x
  3. Step 3: Cross multiply
    2,187.11x = 3,018.13 × 1,192.37
  4. Step 4: Simplify right side
    2,187.11x = 3,598,706.62
  5. Step 5: Solve for x
    x = 3,598,706.62/2,187.11
  6. Step 6: Final answer
    x = 1,645.42

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1.5x scale

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.