Home / 1,814.23-2,720.67-718.75

Finding the Fourth Proportional to 1,814.23, 2,720.67 and 718.75

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Solution

The fourth proportional to 1,814.23, 2,720.67 and 718.75 is: 1,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.23 : 2,720.67 = 718.75 : x
  2. Step 2: Convert to fraction form
    1,814.23/2,720.67 = 718.75/x
  3. Step 3: Cross multiply
    1,814.23x = 2,720.67 × 718.75
  4. Step 4: Simplify right side
    1,814.23x = 1,955,481.56
  5. Step 5: Solve for x
    x = 1,955,481.56/1,814.23
  6. Step 6: Final answer
    x = 1,077.86

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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.