Home / 7,221.10-10,831.56-2,290.61

Finding the Fourth Proportional to 7,221.10, 10,831.56 and 2,290.61

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Solution

The fourth proportional to 7,221.10, 10,831.56 and 2,290.61 is: 3,435.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.10 : 10,831.56 = 2,290.61 : x
  2. Step 2: Convert to fraction form
    7,221.10/10,831.56 = 2,290.61/x
  3. Step 3: Cross multiply
    7,221.10x = 10,831.56 × 2,290.61
  4. Step 4: Simplify right side
    7,221.10x = 24,810,879.65
  5. Step 5: Solve for x
    x = 24,810,879.65/7,221.10
  6. Step 6: Final answer
    x = 3,435.89

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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.