Home / 7,687.31-11,522.53-3,243.94

Finding the Fourth Proportional to 7,687.31, 11,522.53 and 3,243.94

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Solution

The fourth proportional to 7,687.31, 11,522.53 and 3,243.94 is: 4,862.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.31 : 11,522.53 = 3,243.94 : x
  2. Step 2: Convert to fraction form
    7,687.31/11,522.53 = 3,243.94/x
  3. Step 3: Cross multiply
    7,687.31x = 11,522.53 × 3,243.94
  4. Step 4: Simplify right side
    7,687.31x = 37,378,345.89
  5. Step 5: Solve for x
    x = 37,378,345.89/7,687.31
  6. Step 6: Final answer
    x = 4,862.35

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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.