Home / 3,322.20-4,977.90-2,087.40

Finding the Fourth Proportional to 3,322.20, 4,977.90 and 2,087.40

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Solution

The fourth proportional to 3,322.20, 4,977.90 and 2,087.40 is: 3,127.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,322.20 : 4,977.90 = 2,087.40 : x
  2. Step 2: Convert to fraction form
    3,322.20/4,977.90 = 2,087.40/x
  3. Step 3: Cross multiply
    3,322.20x = 4,977.90 × 2,087.40
  4. Step 4: Simplify right side
    3,322.20x = 10,390,868.46
  5. Step 5: Solve for x
    x = 10,390,868.46/3,322.20
  6. Step 6: Final answer
    x = 3,127.71

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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.