Home / 7,638.45-11,456.08-3,745.65

Finding the Fourth Proportional to 7,638.45, 11,456.08 and 3,745.65

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Solution

The fourth proportional to 7,638.45, 11,456.08 and 3,745.65 is: 5,617.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.45 : 11,456.08 = 3,745.65 : x
  2. Step 2: Convert to fraction form
    7,638.45/11,456.08 = 3,745.65/x
  3. Step 3: Cross multiply
    7,638.45x = 11,456.08 × 3,745.65
  4. Step 4: Simplify right side
    7,638.45x = 42,910,447.32
  5. Step 5: Solve for x
    x = 42,910,447.32/7,638.45
  6. Step 6: Final answer
    x = 5,617.69

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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.