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Finding the Fourth Proportional to 2,659.41, 3,989.12 and 1,015.56

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Solution

The fourth proportional to 2,659.41, 3,989.12 and 1,015.56 is: 1,523.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.41 : 3,989.12 = 1,015.56 : x
  2. Step 2: Convert to fraction form
    2,659.41/3,989.12 = 1,015.56/x
  3. Step 3: Cross multiply
    2,659.41x = 3,989.12 × 1,015.56
  4. Step 4: Simplify right side
    2,659.41x = 4,051,185.63
  5. Step 5: Solve for x
    x = 4,051,185.63/2,659.41
  6. Step 6: Final answer
    x = 1,523.34

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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.