Home / 2,177.38-3,005.88-1,431.82

Finding the Fourth Proportional to 2,177.38, 3,005.88 and 1,431.82

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Solution

The fourth proportional to 2,177.38, 3,005.88 and 1,431.82 is: 1,976.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.38 : 3,005.88 = 1,431.82 : x
  2. Step 2: Convert to fraction form
    2,177.38/3,005.88 = 1,431.82/x
  3. Step 3: Cross multiply
    2,177.38x = 3,005.88 × 1,431.82
  4. Step 4: Simplify right side
    2,177.38x = 4,303,879.10
  5. Step 5: Solve for x
    x = 4,303,879.10/2,177.38
  6. Step 6: Final answer
    x = 1,976.63

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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.