Home / 7,619.28-11,418.86-4,100.64

Finding the Fourth Proportional to 7,619.28, 11,418.86 and 4,100.64

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Solution

The fourth proportional to 7,619.28, 11,418.86 and 4,100.64 is: 6,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.28 : 11,418.86 = 4,100.64 : x
  2. Step 2: Convert to fraction form
    7,619.28/11,418.86 = 4,100.64/x
  3. Step 3: Cross multiply
    7,619.28x = 11,418.86 × 4,100.64
  4. Step 4: Simplify right side
    7,619.28x = 46,824,634.07
  5. Step 5: Solve for x
    x = 46,824,634.07/7,619.28
  6. Step 6: Final answer
    x = 6,145.55

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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.