Home / 10,208.38-15,311.17-2,811.77

Finding the Fourth Proportional to 10,208.38, 15,311.17 and 2,811.77

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Solution

The fourth proportional to 10,208.38, 15,311.17 and 2,811.77 is: 4,217.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,208.38 : 15,311.17 = 2,811.77 : x
  2. Step 2: Convert to fraction form
    10,208.38/15,311.17 = 2,811.77/x
  3. Step 3: Cross multiply
    10,208.38x = 15,311.17 × 2,811.77
  4. Step 4: Simplify right side
    10,208.38x = 43,051,474.41
  5. Step 5: Solve for x
    x = 43,051,474.41/10,208.38
  6. Step 6: Final answer
    x = 4,217.27

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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.