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Finding the Fourth Proportional to 3,956.99, 5,459.12 and 2,540.30

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Solution

The fourth proportional to 3,956.99, 5,459.12 and 2,540.30 is: 3,504.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.99 : 5,459.12 = 2,540.30 : x
  2. Step 2: Convert to fraction form
    3,956.99/5,459.12 = 2,540.30/x
  3. Step 3: Cross multiply
    3,956.99x = 5,459.12 × 2,540.30
  4. Step 4: Simplify right side
    3,956.99x = 13,867,803.48
  5. Step 5: Solve for x
    x = 13,867,803.48/3,956.99
  6. Step 6: Final answer
    x = 3,504.63

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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.