Home / 3,647.72-5,472.96-2,187.90

Finding the Fourth Proportional to 3,647.72, 5,472.96 and 2,187.90

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Solution

The fourth proportional to 3,647.72, 5,472.96 and 2,187.90 is: 3,282.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,647.72 : 5,472.96 = 2,187.90 : x
  2. Step 2: Convert to fraction form
    3,647.72/5,472.96 = 2,187.90/x
  3. Step 3: Cross multiply
    3,647.72x = 5,472.96 × 2,187.90
  4. Step 4: Simplify right side
    3,647.72x = 11,974,289.18
  5. Step 5: Solve for x
    x = 11,974,289.18/3,647.72
  6. Step 6: Final answer
    x = 3,282.68

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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.