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Finding the Fourth Proportional to 2,187.69, 3,019.02 and 1,192.97

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Solution

The fourth proportional to 2,187.69, 3,019.02 and 1,192.97 is: 1,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.69 : 3,019.02 = 1,192.97 : x
  2. Step 2: Convert to fraction form
    2,187.69/3,019.02 = 1,192.97/x
  3. Step 3: Cross multiply
    2,187.69x = 3,019.02 × 1,192.97
  4. Step 4: Simplify right side
    2,187.69x = 3,601,600.29
  5. Step 5: Solve for x
    x = 3,601,600.29/2,187.69
  6. Step 6: Final answer
    x = 1,646.30

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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.