Home / 7,212.98-10,800.78-6,179.60

Finding the Fourth Proportional to 7,212.98, 10,800.78 and 6,179.60

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Solution

The fourth proportional to 7,212.98, 10,800.78 and 6,179.60 is: 9,253.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.98 : 10,800.78 = 6,179.60 : x
  2. Step 2: Convert to fraction form
    7,212.98/10,800.78 = 6,179.60/x
  3. Step 3: Cross multiply
    7,212.98x = 10,800.78 × 6,179.60
  4. Step 4: Simplify right side
    7,212.98x = 66,744,500.09
  5. Step 5: Solve for x
    x = 66,744,500.09/7,212.98
  6. Step 6: Final answer
    x = 9,253.39

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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.