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Finding the Fourth Proportional to 3,618.64, 4,995.90 and 2,361.88

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Solution

The fourth proportional to 3,618.64, 4,995.90 and 2,361.88 is: 3,260.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.64 : 4,995.90 = 2,361.88 : x
  2. Step 2: Convert to fraction form
    3,618.64/4,995.90 = 2,361.88/x
  3. Step 3: Cross multiply
    3,618.64x = 4,995.90 × 2,361.88
  4. Step 4: Simplify right side
    3,618.64x = 11,799,716.29
  5. Step 5: Solve for x
    x = 11,799,716.29/3,618.64
  6. Step 6: Final answer
    x = 3,260.82

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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.