Home / 2,311.65-3,190.31-1,316.97

Finding the Fourth Proportional to 2,311.65, 3,190.31 and 1,316.97

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Solution

The fourth proportional to 2,311.65, 3,190.31 and 1,316.97 is: 1,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.65 : 3,190.31 = 1,316.97 : x
  2. Step 2: Convert to fraction form
    2,311.65/3,190.31 = 1,316.97/x
  3. Step 3: Cross multiply
    2,311.65x = 3,190.31 × 1,316.97
  4. Step 4: Simplify right side
    2,311.65x = 4,201,535.98
  5. Step 5: Solve for x
    x = 4,201,535.98/2,311.65
  6. Step 6: Final answer
    x = 1,817.55

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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.