Home / 3,620.16-5,429.16-1,311.84

Finding the Fourth Proportional to 3,620.16, 5,429.16 and 1,311.84

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Solution

The fourth proportional to 3,620.16, 5,429.16 and 1,311.84 is: 1,967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.16 : 5,429.16 = 1,311.84 : x
  2. Step 2: Convert to fraction form
    3,620.16/5,429.16 = 1,311.84/x
  3. Step 3: Cross multiply
    3,620.16x = 5,429.16 × 1,311.84
  4. Step 4: Simplify right side
    3,620.16x = 7,122,189.25
  5. Step 5: Solve for x
    x = 7,122,189.25/3,620.16
  6. Step 6: Final answer
    x = 1,967.37

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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.