Home / 4,751.20-7,122-2,152.80

Finding the Fourth Proportional to 4,751.20, 7,122 and 2,152.80

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Solution

The fourth proportional to 4,751.20, 7,122 and 2,152.80 is: 3,227.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.20 : 7,122 = 2,152.80 : x
  2. Step 2: Convert to fraction form
    4,751.20/7,122 = 2,152.80/x
  3. Step 3: Cross multiply
    4,751.20x = 7,122 × 2,152.80
  4. Step 4: Simplify right side
    4,751.20x = 15,332,241.60
  5. Step 5: Solve for x
    x = 15,332,241.60/4,751.20
  6. Step 6: Final answer
    x = 3,227.03

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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.