Home / 5,221.54-7,836.20-2,101.57

Finding the Fourth Proportional to 5,221.54, 7,836.20 and 2,101.57

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Solution

The fourth proportional to 5,221.54, 7,836.20 and 2,101.57 is: 3,153.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.54 : 7,836.20 = 2,101.57 : x
  2. Step 2: Convert to fraction form
    5,221.54/7,836.20 = 2,101.57/x
  3. Step 3: Cross multiply
    5,221.54x = 7,836.20 × 2,101.57
  4. Step 4: Simplify right side
    5,221.54x = 16,468,312.33
  5. Step 5: Solve for x
    x = 16,468,312.33/5,221.54
  6. Step 6: Final answer
    x = 3,153.92

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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.