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Finding the Fourth Proportional to 4,120.88, 5,687.11 and 2,549.88

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Solution

The fourth proportional to 4,120.88, 5,687.11 and 2,549.88 is: 3,519.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.88 : 5,687.11 = 2,549.88 : x
  2. Step 2: Convert to fraction form
    4,120.88/5,687.11 = 2,549.88/x
  3. Step 3: Cross multiply
    4,120.88x = 5,687.11 × 2,549.88
  4. Step 4: Simplify right side
    4,120.88x = 14,501,451.23
  5. Step 5: Solve for x
    x = 14,501,451.23/4,120.88
  6. Step 6: Final answer
    x = 3,519.02

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1.5x scale

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.