Home / 7,638.12-11,455.32-3,193.38

Finding the Fourth Proportional to 7,638.12, 11,455.32 and 3,193.38

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Solution

The fourth proportional to 7,638.12, 11,455.32 and 3,193.38 is: 4,789.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.12 : 11,455.32 = 3,193.38 : x
  2. Step 2: Convert to fraction form
    7,638.12/11,455.32 = 3,193.38/x
  3. Step 3: Cross multiply
    7,638.12x = 11,455.32 × 3,193.38
  4. Step 4: Simplify right side
    7,638.12x = 36,581,189.78
  5. Step 5: Solve for x
    x = 36,581,189.78/7,638.12
  6. Step 6: Final answer
    x = 4,789.29

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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.