Home / 1,896.12-2,616.66-1,188.36

Finding the Fourth Proportional to 1,896.12, 2,616.66 and 1,188.36

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Solution

The fourth proportional to 1,896.12, 2,616.66 and 1,188.36 is: 1,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,896.12 : 2,616.66 = 1,188.36 : x
  2. Step 2: Convert to fraction form
    1,896.12/2,616.66 = 1,188.36/x
  3. Step 3: Cross multiply
    1,896.12x = 2,616.66 × 1,188.36
  4. Step 4: Simplify right side
    1,896.12x = 3,109,534.08
  5. Step 5: Solve for x
    x = 3,109,534.08/1,896.12
  6. Step 6: Final answer
    x = 1,639.95

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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.