Home / 3,385.46-5,078.40-1,305.48

Finding the Fourth Proportional to 3,385.46, 5,078.40 and 1,305.48

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Solution

The fourth proportional to 3,385.46, 5,078.40 and 1,305.48 is: 1,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.46 : 5,078.40 = 1,305.48 : x
  2. Step 2: Convert to fraction form
    3,385.46/5,078.40 = 1,305.48/x
  3. Step 3: Cross multiply
    3,385.46x = 5,078.40 × 1,305.48
  4. Step 4: Simplify right side
    3,385.46x = 6,629,749.63
  5. Step 5: Solve for x
    x = 6,629,749.63/3,385.46
  6. Step 6: Final answer
    x = 1,958.30

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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.