Home / 2,118.07-3,176.97-730.81

Finding the Fourth Proportional to 2,118.07, 3,176.97 and 730.81

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Solution

The fourth proportional to 2,118.07, 3,176.97 and 730.81 is: 1,096.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.07 : 3,176.97 = 730.81 : x
  2. Step 2: Convert to fraction form
    2,118.07/3,176.97 = 730.81/x
  3. Step 3: Cross multiply
    2,118.07x = 3,176.97 × 730.81
  4. Step 4: Simplify right side
    2,118.07x = 2,321,761.45
  5. Step 5: Solve for x
    x = 2,321,761.45/2,118.07
  6. Step 6: Final answer
    x = 1,096.17

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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.