Home / 5,311.15-7,962.40-2,189.41

Finding the Fourth Proportional to 5,311.15, 7,962.40 and 2,189.41

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Solution

The fourth proportional to 5,311.15, 7,962.40 and 2,189.41 is: 3,282.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.15 : 7,962.40 = 2,189.41 : x
  2. Step 2: Convert to fraction form
    5,311.15/7,962.40 = 2,189.41/x
  3. Step 3: Cross multiply
    5,311.15x = 7,962.40 × 2,189.41
  4. Step 4: Simplify right side
    5,311.15x = 17,432,958.18
  5. Step 5: Solve for x
    x = 17,432,958.18/5,311.15
  6. Step 6: Final answer
    x = 3,282.33

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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.