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Finding the Fourth Proportional to 2,763.18, 4,142.07 and 2,520.18

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Solution

The fourth proportional to 2,763.18, 4,142.07 and 2,520.18 is: 3,777.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,763.18 : 4,142.07 = 2,520.18 : x
  2. Step 2: Convert to fraction form
    2,763.18/4,142.07 = 2,520.18/x
  3. Step 3: Cross multiply
    2,763.18x = 4,142.07 × 2,520.18
  4. Step 4: Simplify right side
    2,763.18x = 10,438,761.97
  5. Step 5: Solve for x
    x = 10,438,761.97/2,763.18
  6. Step 6: Final answer
    x = 3,777.81

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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.