Home / 3,480.48-5,220.87-1,288.02

Finding the Fourth Proportional to 3,480.48, 5,220.87 and 1,288.02

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Solution

The fourth proportional to 3,480.48, 5,220.87 and 1,288.02 is: 1,932.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.48 : 5,220.87 = 1,288.02 : x
  2. Step 2: Convert to fraction form
    3,480.48/5,220.87 = 1,288.02/x
  3. Step 3: Cross multiply
    3,480.48x = 5,220.87 × 1,288.02
  4. Step 4: Simplify right side
    3,480.48x = 6,724,584.98
  5. Step 5: Solve for x
    x = 6,724,584.98/3,480.48
  6. Step 6: Final answer
    x = 1,932.09

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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.