Home / 5,412.24-8,119.08-2,638.53

Finding the Fourth Proportional to 5,412.24, 8,119.08 and 2,638.53

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Solution

The fourth proportional to 5,412.24, 8,119.08 and 2,638.53 is: 3,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.24 : 8,119.08 = 2,638.53 : x
  2. Step 2: Convert to fraction form
    5,412.24/8,119.08 = 2,638.53/x
  3. Step 3: Cross multiply
    5,412.24x = 8,119.08 × 2,638.53
  4. Step 4: Simplify right side
    5,412.24x = 21,422,436.15
  5. Step 5: Solve for x
    x = 21,422,436.15/5,412.24
  6. Step 6: Final answer
    x = 3,958.15

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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.