Home / 2,187.13-3,018.19-1,192.42

Finding the Fourth Proportional to 2,187.13, 3,018.19 and 1,192.42

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Solution

The fourth proportional to 2,187.13, 3,018.19 and 1,192.42 is: 1,645.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.13 : 3,018.19 = 1,192.42 : x
  2. Step 2: Convert to fraction form
    2,187.13/3,018.19 = 1,192.42/x
  3. Step 3: Cross multiply
    2,187.13x = 3,018.19 × 1,192.42
  4. Step 4: Simplify right side
    2,187.13x = 3,598,950.12
  5. Step 5: Solve for x
    x = 3,598,950.12/2,187.13
  6. Step 6: Final answer
    x = 1,645.51

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Half scale
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Double scale
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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.