Home / 2,182.41-3,011.75-1,187.70

Finding the Fourth Proportional to 2,182.41, 3,011.75 and 1,187.70

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Solution

The fourth proportional to 2,182.41, 3,011.75 and 1,187.70 is: 1,639.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,182.41 : 3,011.75 = 1,187.70 : x
  2. Step 2: Convert to fraction form
    2,182.41/3,011.75 = 1,187.70/x
  3. Step 3: Cross multiply
    2,182.41x = 3,011.75 × 1,187.70
  4. Step 4: Simplify right side
    2,182.41x = 3,577,049.54
  5. Step 5: Solve for x
    x = 3,577,049.54/2,182.41
  6. Step 6: Final answer
    x = 1,639.04

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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.