Home / 3,188.90-4,399.96-1,929.93

Finding the Fourth Proportional to 3,188.90, 4,399.96 and 1,929.93

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Solution

The fourth proportional to 3,188.90, 4,399.96 and 1,929.93 is: 2,662.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.90 : 4,399.96 = 1,929.93 : x
  2. Step 2: Convert to fraction form
    3,188.90/4,399.96 = 1,929.93/x
  3. Step 3: Cross multiply
    3,188.90x = 4,399.96 × 1,929.93
  4. Step 4: Simplify right side
    3,188.90x = 8,491,614.80
  5. Step 5: Solve for x
    x = 8,491,614.80/3,188.90
  6. Step 6: Final answer
    x = 2,662.87

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Why These Related Problems?

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