Home / 2,604.72-3,902.96-2,115.40

Finding the Fourth Proportional to 2,604.72, 3,902.96 and 2,115.40

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Solution

The fourth proportional to 2,604.72, 3,902.96 and 2,115.40 is: 3,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,604.72 : 3,902.96 = 2,115.40 : x
  2. Step 2: Convert to fraction form
    2,604.72/3,902.96 = 2,115.40/x
  3. Step 3: Cross multiply
    2,604.72x = 3,902.96 × 2,115.40
  4. Step 4: Simplify right side
    2,604.72x = 8,256,321.58
  5. Step 5: Solve for x
    x = 8,256,321.58/2,604.72
  6. Step 6: Final answer
    x = 3,169.75

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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.