Home / 1,825.12-2,519.79-1,187.67

Finding the Fourth Proportional to 1,825.12, 2,519.79 and 1,187.67

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Solution

The fourth proportional to 1,825.12, 2,519.79 and 1,187.67 is: 1,639.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,825.12 : 2,519.79 = 1,187.67 : x
  2. Step 2: Convert to fraction form
    1,825.12/2,519.79 = 1,187.67/x
  3. Step 3: Cross multiply
    1,825.12x = 2,519.79 × 1,187.67
  4. Step 4: Simplify right side
    1,825.12x = 2,992,665.09
  5. Step 5: Solve for x
    x = 2,992,665.09/1,825.12
  6. Step 6: Final answer
    x = 1,639.71

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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.