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Finding the Fourth Proportional to 5,014.80, 7,525.80 and 2,821.20

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Solution

The fourth proportional to 5,014.80, 7,525.80 and 2,821.20 is: 4,233.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,014.80 : 7,525.80 = 2,821.20 : x
  2. Step 2: Convert to fraction form
    5,014.80/7,525.80 = 2,821.20/x
  3. Step 3: Cross multiply
    5,014.80x = 7,525.80 × 2,821.20
  4. Step 4: Simplify right side
    5,014.80x = 21,231,786.96
  5. Step 5: Solve for x
    x = 21,231,786.96/5,014.80
  6. Step 6: Final answer
    x = 4,233.83

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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.