Home / 4,761.90-7,140.78-2,789.64

Finding the Fourth Proportional to 4,761.90, 7,140.78 and 2,789.64

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Solution

The fourth proportional to 4,761.90, 7,140.78 and 2,789.64 is: 4,183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,761.90 : 7,140.78 = 2,789.64 : x
  2. Step 2: Convert to fraction form
    4,761.90/7,140.78 = 2,789.64/x
  3. Step 3: Cross multiply
    4,761.90x = 7,140.78 × 2,789.64
  4. Step 4: Simplify right side
    4,761.90x = 19,920,205.52
  5. Step 5: Solve for x
    x = 19,920,205.52/4,761.90
  6. Step 6: Final answer
    x = 4,183.25

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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.