Home / 4,212.20-6,320.70-2,914.60

Finding the Fourth Proportional to 4,212.20, 6,320.70 and 2,914.60

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Solution

The fourth proportional to 4,212.20, 6,320.70 and 2,914.60 is: 4,373.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.20 : 6,320.70 = 2,914.60 : x
  2. Step 2: Convert to fraction form
    4,212.20/6,320.70 = 2,914.60/x
  3. Step 3: Cross multiply
    4,212.20x = 6,320.70 × 2,914.60
  4. Step 4: Simplify right side
    4,212.20x = 18,422,312.22
  5. Step 5: Solve for x
    x = 18,422,312.22/4,212.20
  6. Step 6: Final answer
    x = 4,373.56

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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.