Home / 2,305.40-3,181.32-1,310.54

Finding the Fourth Proportional to 2,305.40, 3,181.32 and 1,310.54

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Solution

The fourth proportional to 2,305.40, 3,181.32 and 1,310.54 is: 1,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.40 : 3,181.32 = 1,310.54 : x
  2. Step 2: Convert to fraction form
    2,305.40/3,181.32 = 1,310.54/x
  3. Step 3: Cross multiply
    2,305.40x = 3,181.32 × 1,310.54
  4. Step 4: Simplify right side
    2,305.40x = 4,169,231.21
  5. Step 5: Solve for x
    x = 4,169,231.21/2,305.40
  6. Step 6: Final answer
    x = 1,808.47

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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.