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Finding the Fourth Proportional to 5,397.80, 8,099.05 and 1,890.33

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Solution

The fourth proportional to 5,397.80, 8,099.05 and 1,890.33 is: 2,836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,397.80 : 8,099.05 = 1,890.33 : x
  2. Step 2: Convert to fraction form
    5,397.80/8,099.05 = 1,890.33/x
  3. Step 3: Cross multiply
    5,397.80x = 8,099.05 × 1,890.33
  4. Step 4: Simplify right side
    5,397.80x = 15,309,836.69
  5. Step 5: Solve for x
    x = 15,309,836.69/5,397.80
  6. Step 6: Final answer
    x = 2,836.31

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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.