Home / 7,687.63-11,531.75-2,141.46

Finding the Fourth Proportional to 7,687.63, 11,531.75 and 2,141.46

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Solution

The fourth proportional to 7,687.63, 11,531.75 and 2,141.46 is: 3,212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.63 : 11,531.75 = 2,141.46 : x
  2. Step 2: Convert to fraction form
    7,687.63/11,531.75 = 2,141.46/x
  3. Step 3: Cross multiply
    7,687.63x = 11,531.75 × 2,141.46
  4. Step 4: Simplify right side
    7,687.63x = 24,694,781.36
  5. Step 5: Solve for x
    x = 24,694,781.36/7,687.63
  6. Step 6: Final answer
    x = 3,212.27

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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.