Home / 7,764.80-11,619.84-6,361.28

Finding the Fourth Proportional to 7,764.80, 11,619.84 and 6,361.28

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Solution

The fourth proportional to 7,764.80, 11,619.84 and 6,361.28 is: 9,519.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.80 : 11,619.84 = 6,361.28 : x
  2. Step 2: Convert to fraction form
    7,764.80/11,619.84 = 6,361.28/x
  3. Step 3: Cross multiply
    7,764.80x = 11,619.84 × 6,361.28
  4. Step 4: Simplify right side
    7,764.80x = 73,917,055.80
  5. Step 5: Solve for x
    x = 73,917,055.80/7,764.80
  6. Step 6: Final answer
    x = 9,519.51

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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.