Home / 5,190.76-7,782.48-2,591.86

Finding the Fourth Proportional to 5,190.76, 7,782.48 and 2,591.86

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Solution

The fourth proportional to 5,190.76, 7,782.48 and 2,591.86 is: 3,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.76 : 7,782.48 = 2,591.86 : x
  2. Step 2: Convert to fraction form
    5,190.76/7,782.48 = 2,591.86/x
  3. Step 3: Cross multiply
    5,190.76x = 7,782.48 × 2,591.86
  4. Step 4: Simplify right side
    5,190.76x = 20,171,098.61
  5. Step 5: Solve for x
    x = 20,171,098.61/5,190.76
  6. Step 6: Final answer
    x = 3,885.96

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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.