Home / 1,814.31-2,721.84-718.68

Finding the Fourth Proportional to 1,814.31, 2,721.84 and 718.68

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Solution

The fourth proportional to 1,814.31, 2,721.84 and 718.68 is: 1,078.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.31 : 2,721.84 = 718.68 : x
  2. Step 2: Convert to fraction form
    1,814.31/2,721.84 = 718.68/x
  3. Step 3: Cross multiply
    1,814.31x = 2,721.84 × 718.68
  4. Step 4: Simplify right side
    1,814.31x = 1,956,131.97
  5. Step 5: Solve for x
    x = 1,956,131.97/1,814.31
  6. Step 6: Final answer
    x = 1,078.17

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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.