Home / 4,939.20-6,815.43-2,814.48

Finding the Fourth Proportional to 4,939.20, 6,815.43 and 2,814.48

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Solution

The fourth proportional to 4,939.20, 6,815.43 and 2,814.48 is: 3,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.20 : 6,815.43 = 2,814.48 : x
  2. Step 2: Convert to fraction form
    4,939.20/6,815.43 = 2,814.48/x
  3. Step 3: Cross multiply
    4,939.20x = 6,815.43 × 2,814.48
  4. Step 4: Simplify right side
    4,939.20x = 19,181,891.43
  5. Step 5: Solve for x
    x = 19,181,891.43/4,939.20
  6. Step 6: Final answer
    x = 3,883.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.