Home / 4,761.20-7,142.64-1,640.96

Finding the Fourth Proportional to 4,761.20, 7,142.64 and 1,640.96

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Solution

The fourth proportional to 4,761.20, 7,142.64 and 1,640.96 is: 2,461.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,761.20 : 7,142.64 = 1,640.96 : x
  2. Step 2: Convert to fraction form
    4,761.20/7,142.64 = 1,640.96/x
  3. Step 3: Cross multiply
    4,761.20x = 7,142.64 × 1,640.96
  4. Step 4: Simplify right side
    4,761.20x = 11,720,786.53
  5. Step 5: Solve for x
    x = 11,720,786.53/4,761.20
  6. Step 6: Final answer
    x = 2,461.73

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1.5x scale

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.