Home / 3,405.85-5,108.87-1,761.35

Finding the Fourth Proportional to 3,405.85, 5,108.87 and 1,761.35

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Solution

The fourth proportional to 3,405.85, 5,108.87 and 1,761.35 is: 2,642.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.85 : 5,108.87 = 1,761.35 : x
  2. Step 2: Convert to fraction form
    3,405.85/5,108.87 = 1,761.35/x
  3. Step 3: Cross multiply
    3,405.85x = 5,108.87 × 1,761.35
  4. Step 4: Simplify right side
    3,405.85x = 8,998,487.03
  5. Step 5: Solve for x
    x = 8,998,487.03/3,405.85
  6. Step 6: Final answer
    x = 2,642.07

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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.