Home / 2,520.50-3,469.11-2,219.78

Finding the Fourth Proportional to 2,520.50, 3,469.11 and 2,219.78

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Solution

The fourth proportional to 2,520.50, 3,469.11 and 2,219.78 is: 3,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.50 : 3,469.11 = 2,219.78 : x
  2. Step 2: Convert to fraction form
    2,520.50/3,469.11 = 2,219.78/x
  3. Step 3: Cross multiply
    2,520.50x = 3,469.11 × 2,219.78
  4. Step 4: Simplify right side
    2,520.50x = 7,700,643.65
  5. Step 5: Solve for x
    x = 7,700,643.65/2,520.50
  6. Step 6: Final answer
    x = 3,055.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.