Home / 5,477-8,215.50-2,191.56

Finding the Fourth Proportional to 5,477, 8,215.50 and 2,191.56

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Solution

The fourth proportional to 5,477, 8,215.50 and 2,191.56 is: 3,287.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,477 : 8,215.50 = 2,191.56 : x
  2. Step 2: Convert to fraction form
    5,477/8,215.50 = 2,191.56/x
  3. Step 3: Cross multiply
    5,477x = 8,215.50 × 2,191.56
  4. Step 4: Simplify right side
    5,477x = 18,004,761.18
  5. Step 5: Solve for x
    x = 18,004,761.18/5,477
  6. Step 6: Final answer
    x = 3,287.34

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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.