Home / 2,187.10-3,018.19-1,192.37

Finding the Fourth Proportional to 2,187.10, 3,018.19 and 1,192.37

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Solution

The fourth proportional to 2,187.10, 3,018.19 and 1,192.37 is: 1,645.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.10 : 3,018.19 = 1,192.37 : x
  2. Step 2: Convert to fraction form
    2,187.10/3,018.19 = 1,192.37/x
  3. Step 3: Cross multiply
    2,187.10x = 3,018.19 × 1,192.37
  4. Step 4: Simplify right side
    2,187.10x = 3,598,800.79
  5. Step 5: Solve for x
    x = 3,598,800.79/2,187.10
  6. Step 6: Final answer
    x = 1,645.47

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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.