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Finding the Fourth Proportional to 3,290.56, 4,931.28 and 2,361.99

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Solution

The fourth proportional to 3,290.56, 4,931.28 and 2,361.99 is: 3,539.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.56 : 4,931.28 = 2,361.99 : x
  2. Step 2: Convert to fraction form
    3,290.56/4,931.28 = 2,361.99/x
  3. Step 3: Cross multiply
    3,290.56x = 4,931.28 × 2,361.99
  4. Step 4: Simplify right side
    3,290.56x = 11,647,652.54
  5. Step 5: Solve for x
    x = 11,647,652.54/3,290.56
  6. Step 6: Final answer
    x = 3,539.72

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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.