Home / 4,821.96-7,220.60-4,272.48

Finding the Fourth Proportional to 4,821.96, 7,220.60 and 4,272.48

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Solution

The fourth proportional to 4,821.96, 7,220.60 and 4,272.48 is: 6,397.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,821.96 : 7,220.60 = 4,272.48 : x
  2. Step 2: Convert to fraction form
    4,821.96/7,220.60 = 4,272.48/x
  3. Step 3: Cross multiply
    4,821.96x = 7,220.60 × 4,272.48
  4. Step 4: Simplify right side
    4,821.96x = 30,849,869.09
  5. Step 5: Solve for x
    x = 30,849,869.09/4,821.96
  6. Step 6: Final answer
    x = 6,397.79

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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.