Home / 2,858.96-3,945.30-1,680.06

Finding the Fourth Proportional to 2,858.96, 3,945.30 and 1,680.06

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Solution

The fourth proportional to 2,858.96, 3,945.30 and 1,680.06 is: 2,318.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.96 : 3,945.30 = 1,680.06 : x
  2. Step 2: Convert to fraction form
    2,858.96/3,945.30 = 1,680.06/x
  3. Step 3: Cross multiply
    2,858.96x = 3,945.30 × 1,680.06
  4. Step 4: Simplify right side
    2,858.96x = 6,628,340.72
  5. Step 5: Solve for x
    x = 6,628,340.72/2,858.96
  6. Step 6: Final answer
    x = 2,318.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.