Home / 7,220.42-10,820.36-3,212.90

Finding the Fourth Proportional to 7,220.42, 10,820.36 and 3,212.90

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Solution

The fourth proportional to 7,220.42, 10,820.36 and 3,212.90 is: 4,814.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.42 : 10,820.36 = 3,212.90 : x
  2. Step 2: Convert to fraction form
    7,220.42/10,820.36 = 3,212.90/x
  3. Step 3: Cross multiply
    7,220.42x = 10,820.36 × 3,212.90
  4. Step 4: Simplify right side
    7,220.42x = 34,764,734.64
  5. Step 5: Solve for x
    x = 34,764,734.64/7,220.42
  6. Step 6: Final answer
    x = 4,814.78

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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.