Home / 7,287.75-10,931.67-2,906.31

Finding the Fourth Proportional to 7,287.75, 10,931.67 and 2,906.31

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Solution

The fourth proportional to 7,287.75, 10,931.67 and 2,906.31 is: 4,359.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.75 : 10,931.67 = 2,906.31 : x
  2. Step 2: Convert to fraction form
    7,287.75/10,931.67 = 2,906.31/x
  3. Step 3: Cross multiply
    7,287.75x = 10,931.67 × 2,906.31
  4. Step 4: Simplify right side
    7,287.75x = 31,770,821.84
  5. Step 5: Solve for x
    x = 31,770,821.84/7,287.75
  6. Step 6: Final answer
    x = 4,359.48

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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.