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Finding the Fourth Proportional to 3,243.31, 4,475.03 and 1,916.30

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Solution

The fourth proportional to 3,243.31, 4,475.03 and 1,916.30 is: 2,644.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.31 : 4,475.03 = 1,916.30 : x
  2. Step 2: Convert to fraction form
    3,243.31/4,475.03 = 1,916.30/x
  3. Step 3: Cross multiply
    3,243.31x = 4,475.03 × 1,916.30
  4. Step 4: Simplify right side
    3,243.31x = 8,575,468.03
  5. Step 5: Solve for x
    x = 8,575,468.03/3,243.31
  6. Step 6: Final answer
    x = 2,644.05

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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.