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Finding the Fourth Proportional to 7,361.12, 10,157.64 and 4,216.88

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Solution

The fourth proportional to 7,361.12, 10,157.64 and 4,216.88 is: 5,818.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,361.12 : 10,157.64 = 4,216.88 : x
  2. Step 2: Convert to fraction form
    7,361.12/10,157.64 = 4,216.88/x
  3. Step 3: Cross multiply
    7,361.12x = 10,157.64 × 4,216.88
  4. Step 4: Simplify right side
    7,361.12x = 42,833,548.96
  5. Step 5: Solve for x
    x = 42,833,548.96/7,361.12
  6. Step 6: Final answer
    x = 5,818.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.