Home / 3,188.40-4,399.04-1,929.92

Finding the Fourth Proportional to 3,188.40, 4,399.04 and 1,929.92

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Solution

The fourth proportional to 3,188.40, 4,399.04 and 1,929.92 is: 2,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.40 : 4,399.04 = 1,929.92 : x
  2. Step 2: Convert to fraction form
    3,188.40/4,399.04 = 1,929.92/x
  3. Step 3: Cross multiply
    3,188.40x = 4,399.04 × 1,929.92
  4. Step 4: Simplify right side
    3,188.40x = 8,489,795.28
  5. Step 5: Solve for x
    x = 8,489,795.28/3,188.40
  6. Step 6: Final answer
    x = 2,662.71

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1.5x scale

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.