Home / 7,820.20-11,736.42-4,124.60

Finding the Fourth Proportional to 7,820.20, 11,736.42 and 4,124.60

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Solution

The fourth proportional to 7,820.20, 11,736.42 and 4,124.60 is: 6,190.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.20 : 11,736.42 = 4,124.60 : x
  2. Step 2: Convert to fraction form
    7,820.20/11,736.42 = 4,124.60/x
  3. Step 3: Cross multiply
    7,820.20x = 11,736.42 × 4,124.60
  4. Step 4: Simplify right side
    7,820.20x = 48,408,037.93
  5. Step 5: Solve for x
    x = 48,408,037.93/7,820.20
  6. Step 6: Final answer
    x = 6,190.13

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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.