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Finding the Fourth Proportional to 5,858.64, 8,787.96 and 2,161.68

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Solution

The fourth proportional to 5,858.64, 8,787.96 and 2,161.68 is: 3,242.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,858.64 : 8,787.96 = 2,161.68 : x
  2. Step 2: Convert to fraction form
    5,858.64/8,787.96 = 2,161.68/x
  3. Step 3: Cross multiply
    5,858.64x = 8,787.96 × 2,161.68
  4. Step 4: Simplify right side
    5,858.64x = 18,996,757.37
  5. Step 5: Solve for x
    x = 18,996,757.37/5,858.64
  6. Step 6: Final answer
    x = 3,242.52

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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.