Home / 4,638.12-6,399.97-2,869.75

Finding the Fourth Proportional to 4,638.12, 6,399.97 and 2,869.75

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Solution

The fourth proportional to 4,638.12, 6,399.97 and 2,869.75 is: 3,959.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,638.12 : 6,399.97 = 2,869.75 : x
  2. Step 2: Convert to fraction form
    4,638.12/6,399.97 = 2,869.75/x
  3. Step 3: Cross multiply
    4,638.12x = 6,399.97 × 2,869.75
  4. Step 4: Simplify right side
    4,638.12x = 18,366,313.91
  5. Step 5: Solve for x
    x = 18,366,313.91/4,638.12
  6. Step 6: Final answer
    x = 3,959.86

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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.