Home / 3,538.21-4,882.34-2,121.95

Finding the Fourth Proportional to 3,538.21, 4,882.34 and 2,121.95

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Solution

The fourth proportional to 3,538.21, 4,882.34 and 2,121.95 is: 2,928.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.21 : 4,882.34 = 2,121.95 : x
  2. Step 2: Convert to fraction form
    3,538.21/4,882.34 = 2,121.95/x
  3. Step 3: Cross multiply
    3,538.21x = 4,882.34 × 2,121.95
  4. Step 4: Simplify right side
    3,538.21x = 10,360,094.36
  5. Step 5: Solve for x
    x = 10,360,094.36/3,538.21
  6. Step 6: Final answer
    x = 2,928.06

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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.