Home / 7,212.20-10,819.61-3,316.50

Finding the Fourth Proportional to 7,212.20, 10,819.61 and 3,316.50

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Solution

The fourth proportional to 7,212.20, 10,819.61 and 3,316.50 is: 4,975.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.20 : 10,819.61 = 3,316.50 : x
  2. Step 2: Convert to fraction form
    7,212.20/10,819.61 = 3,316.50/x
  3. Step 3: Cross multiply
    7,212.20x = 10,819.61 × 3,316.50
  4. Step 4: Simplify right side
    7,212.20x = 35,883,232.42
  5. Step 5: Solve for x
    x = 35,883,232.42/7,212.20
  6. Step 6: Final answer
    x = 4,975.36

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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.