Home / 3,836.30-5,293.98-2,157.78

Finding the Fourth Proportional to 3,836.30, 5,293.98 and 2,157.78

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Solution

The fourth proportional to 3,836.30, 5,293.98 and 2,157.78 is: 2,977.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.30 : 5,293.98 = 2,157.78 : x
  2. Step 2: Convert to fraction form
    3,836.30/5,293.98 = 2,157.78/x
  3. Step 3: Cross multiply
    3,836.30x = 5,293.98 × 2,157.78
  4. Step 4: Simplify right side
    3,836.30x = 11,423,244.16
  5. Step 5: Solve for x
    x = 11,423,244.16/3,836.30
  6. Step 6: Final answer
    x = 2,977.67

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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.