Home / 2,305.30-3,181.32-1,257.38

Finding the Fourth Proportional to 2,305.30, 3,181.32 and 1,257.38

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Solution

The fourth proportional to 2,305.30, 3,181.32 and 1,257.38 is: 1,735.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.30 : 3,181.32 = 1,257.38 : x
  2. Step 2: Convert to fraction form
    2,305.30/3,181.32 = 1,257.38/x
  3. Step 3: Cross multiply
    2,305.30x = 3,181.32 × 1,257.38
  4. Step 4: Simplify right side
    2,305.30x = 4,000,128.14
  5. Step 5: Solve for x
    x = 4,000,128.14/2,305.30
  6. Step 6: Final answer
    x = 1,735.19

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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.