Home / 2,321.30-3,481.60-677.40

Finding the Fourth Proportional to 2,321.30, 3,481.60 and 677.40

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Solution

The fourth proportional to 2,321.30, 3,481.60 and 677.40 is: 1,016.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.30 : 3,481.60 = 677.40 : x
  2. Step 2: Convert to fraction form
    2,321.30/3,481.60 = 677.40/x
  3. Step 3: Cross multiply
    2,321.30x = 3,481.60 × 677.40
  4. Step 4: Simplify right side
    2,321.30x = 2,358,435.84
  5. Step 5: Solve for x
    x = 2,358,435.84/2,321.30
  6. Step 6: Final answer
    x = 1,016.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.