Home / 1,245.92-1,871.30-1,104.98

Finding the Fourth Proportional to 1,245.92, 1,871.30 and 1,104.98

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Solution

The fourth proportional to 1,245.92, 1,871.30 and 1,104.98 is: 1,659.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.92 : 1,871.30 = 1,104.98 : x
  2. Step 2: Convert to fraction form
    1,245.92/1,871.30 = 1,104.98/x
  3. Step 3: Cross multiply
    1,245.92x = 1,871.30 × 1,104.98
  4. Step 4: Simplify right side
    1,245.92x = 2,067,742.48
  5. Step 5: Solve for x
    x = 2,067,742.48/1,245.92
  6. Step 6: Final answer
    x = 1,659.62

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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.