Home / 2,861.30-3,949.54-1,742.96

Finding the Fourth Proportional to 2,861.30, 3,949.54 and 1,742.96

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Solution

The fourth proportional to 2,861.30, 3,949.54 and 1,742.96 is: 2,405.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.30 : 3,949.54 = 1,742.96 : x
  2. Step 2: Convert to fraction form
    2,861.30/3,949.54 = 1,742.96/x
  3. Step 3: Cross multiply
    2,861.30x = 3,949.54 × 1,742.96
  4. Step 4: Simplify right side
    2,861.30x = 6,883,866.13
  5. Step 5: Solve for x
    x = 6,883,866.13/2,861.30
  6. Step 6: Final answer
    x = 2,405.86

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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.