Home / 2,310.67-3,188.80-1,315.79

Finding the Fourth Proportional to 2,310.67, 3,188.80 and 1,315.79

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Solution

The fourth proportional to 2,310.67, 3,188.80 and 1,315.79 is: 1,815.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.67 : 3,188.80 = 1,315.79 : x
  2. Step 2: Convert to fraction form
    2,310.67/3,188.80 = 1,315.79/x
  3. Step 3: Cross multiply
    2,310.67x = 3,188.80 × 1,315.79
  4. Step 4: Simplify right side
    2,310.67x = 4,195,791.15
  5. Step 5: Solve for x
    x = 4,195,791.15/2,310.67
  6. Step 6: Final answer
    x = 1,815.83

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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.