Home / 3,615.42-5,422.56-1,275.36

Finding the Fourth Proportional to 3,615.42, 5,422.56 and 1,275.36

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Solution

The fourth proportional to 3,615.42, 5,422.56 and 1,275.36 is: 1,912.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.42 : 5,422.56 = 1,275.36 : x
  2. Step 2: Convert to fraction form
    3,615.42/5,422.56 = 1,275.36/x
  3. Step 3: Cross multiply
    3,615.42x = 5,422.56 × 1,275.36
  4. Step 4: Simplify right side
    3,615.42x = 6,915,716.12
  5. Step 5: Solve for x
    x = 6,915,716.12/3,615.42
  6. Step 6: Final answer
    x = 1,912.84

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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.