Home / 5,412.42-8,119.92-2,124.60

Finding the Fourth Proportional to 5,412.42, 8,119.92 and 2,124.60

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Solution

The fourth proportional to 5,412.42, 8,119.92 and 2,124.60 is: 3,187.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.42 : 8,119.92 = 2,124.60 : x
  2. Step 2: Convert to fraction form
    5,412.42/8,119.92 = 2,124.60/x
  3. Step 3: Cross multiply
    5,412.42x = 8,119.92 × 2,124.60
  4. Step 4: Simplify right side
    5,412.42x = 17,251,582.03
  5. Step 5: Solve for x
    x = 17,251,582.03/5,412.42
  6. Step 6: Final answer
    x = 3,187.41

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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.