Home / 3,163.80-4,747.95-1,215.99

Finding the Fourth Proportional to 3,163.80, 4,747.95 and 1,215.99

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Solution

The fourth proportional to 3,163.80, 4,747.95 and 1,215.99 is: 1,824.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.80 : 4,747.95 = 1,215.99 : x
  2. Step 2: Convert to fraction form
    3,163.80/4,747.95 = 1,215.99/x
  3. Step 3: Cross multiply
    3,163.80x = 4,747.95 × 1,215.99
  4. Step 4: Simplify right side
    3,163.80x = 5,773,459.72
  5. Step 5: Solve for x
    x = 5,773,459.72/3,163.80
  6. Step 6: Final answer
    x = 1,824.85

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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.