Home / 7,761.64-11,644.26-2,215.06

Finding the Fourth Proportional to 7,761.64, 11,644.26 and 2,215.06

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Solution

The fourth proportional to 7,761.64, 11,644.26 and 2,215.06 is: 3,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,761.64 : 11,644.26 = 2,215.06 : x
  2. Step 2: Convert to fraction form
    7,761.64/11,644.26 = 2,215.06/x
  3. Step 3: Cross multiply
    7,761.64x = 11,644.26 × 2,215.06
  4. Step 4: Simplify right side
    7,761.64x = 25,792,734.56
  5. Step 5: Solve for x
    x = 25,792,734.56/7,761.64
  6. Step 6: Final answer
    x = 3,323.10

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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.