Home / 3,219.90-4,834.80-1,761.90

Finding the Fourth Proportional to 3,219.90, 4,834.80 and 1,761.90

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Solution

The fourth proportional to 3,219.90, 4,834.80 and 1,761.90 is: 2,645.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.90 : 4,834.80 = 1,761.90 : x
  2. Step 2: Convert to fraction form
    3,219.90/4,834.80 = 1,761.90/x
  3. Step 3: Cross multiply
    3,219.90x = 4,834.80 × 1,761.90
  4. Step 4: Simplify right side
    3,219.90x = 8,518,434.12
  5. Step 5: Solve for x
    x = 8,518,434.12/3,219.90
  6. Step 6: Final answer
    x = 2,645.56

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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.