Home / 9,190.30-13,778.70-3,640.90

Finding the Fourth Proportional to 9,190.30, 13,778.70 and 3,640.90

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Solution

The fourth proportional to 9,190.30, 13,778.70 and 3,640.90 is: 5,458.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.30 : 13,778.70 = 3,640.90 : x
  2. Step 2: Convert to fraction form
    9,190.30/13,778.70 = 3,640.90/x
  3. Step 3: Cross multiply
    9,190.30x = 13,778.70 × 3,640.90
  4. Step 4: Simplify right side
    9,190.30x = 50,166,868.83
  5. Step 5: Solve for x
    x = 50,166,868.83/9,190.30
  6. Step 6: Final answer
    x = 5,458.68

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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.