Home / 7,188.45-10,778.61-2,800.86

Finding the Fourth Proportional to 7,188.45, 10,778.61 and 2,800.86

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Solution

The fourth proportional to 7,188.45, 10,778.61 and 2,800.86 is: 4,199.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.45 : 10,778.61 = 2,800.86 : x
  2. Step 2: Convert to fraction form
    7,188.45/10,778.61 = 2,800.86/x
  3. Step 3: Cross multiply
    7,188.45x = 10,778.61 × 2,800.86
  4. Step 4: Simplify right side
    7,188.45x = 30,189,377.60
  5. Step 5: Solve for x
    x = 30,189,377.60/7,188.45
  6. Step 6: Final answer
    x = 4,199.71

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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.