Home / 3,399.28-5,095.79-1,320.67

Finding the Fourth Proportional to 3,399.28, 5,095.79 and 1,320.67

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Solution

The fourth proportional to 3,399.28, 5,095.79 and 1,320.67 is: 1,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.28 : 5,095.79 = 1,320.67 : x
  2. Step 2: Convert to fraction form
    3,399.28/5,095.79 = 1,320.67/x
  3. Step 3: Cross multiply
    3,399.28x = 5,095.79 × 1,320.67
  4. Step 4: Simplify right side
    3,399.28x = 6,729,831.50
  5. Step 5: Solve for x
    x = 6,729,831.50/3,399.28
  6. Step 6: Final answer
    x = 1,979.78

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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.