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Finding the Fourth Proportional to 5,903.80, 8,857.75 and 2,619.20

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Solution

The fourth proportional to 5,903.80, 8,857.75 and 2,619.20 is: 3,929.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,903.80 : 8,857.75 = 2,619.20 : x
  2. Step 2: Convert to fraction form
    5,903.80/8,857.75 = 2,619.20/x
  3. Step 3: Cross multiply
    5,903.80x = 8,857.75 × 2,619.20
  4. Step 4: Simplify right side
    5,903.80x = 23,200,218.80
  5. Step 5: Solve for x
    x = 23,200,218.80/5,903.80
  6. Step 6: Final answer
    x = 3,929.71

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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.