Home / 2,617.28-3,611.64-1,438.41

Finding the Fourth Proportional to 2,617.28, 3,611.64 and 1,438.41

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Solution

The fourth proportional to 2,617.28, 3,611.64 and 1,438.41 is: 1,984.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.28 : 3,611.64 = 1,438.41 : x
  2. Step 2: Convert to fraction form
    2,617.28/3,611.64 = 1,438.41/x
  3. Step 3: Cross multiply
    2,617.28x = 3,611.64 × 1,438.41
  4. Step 4: Simplify right side
    2,617.28x = 5,195,019.09
  5. Step 5: Solve for x
    x = 5,195,019.09/2,617.28
  6. Step 6: Final answer
    x = 1,984.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.