Home / 3,530.80-5,285.67-2,139.94

Finding the Fourth Proportional to 3,530.80, 5,285.67 and 2,139.94

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Solution

The fourth proportional to 3,530.80, 5,285.67 and 2,139.94 is: 3,203.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.80 : 5,285.67 = 2,139.94 : x
  2. Step 2: Convert to fraction form
    3,530.80/5,285.67 = 2,139.94/x
  3. Step 3: Cross multiply
    3,530.80x = 5,285.67 × 2,139.94
  4. Step 4: Simplify right side
    3,530.80x = 11,311,016.66
  5. Step 5: Solve for x
    x = 11,311,016.66/3,530.80
  6. Step 6: Final answer
    x = 3,203.53

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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.