Home / 3,385.97-5,074.30-1,905.90

Finding the Fourth Proportional to 3,385.97, 5,074.30 and 1,905.90

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Solution

The fourth proportional to 3,385.97, 5,074.30 and 1,905.90 is: 2,856.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.97 : 5,074.30 = 1,905.90 : x
  2. Step 2: Convert to fraction form
    3,385.97/5,074.30 = 1,905.90/x
  3. Step 3: Cross multiply
    3,385.97x = 5,074.30 × 1,905.90
  4. Step 4: Simplify right side
    3,385.97x = 9,671,098.84
  5. Step 5: Solve for x
    x = 9,671,098.84/3,385.97
  6. Step 6: Final answer
    x = 2,856.23

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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.