Home / 5,419.76-8,122.99-3,081.72

Finding the Fourth Proportional to 5,419.76, 8,122.99 and 3,081.72

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Solution

The fourth proportional to 5,419.76, 8,122.99 and 3,081.72 is: 4,618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.76 : 8,122.99 = 3,081.72 : x
  2. Step 2: Convert to fraction form
    5,419.76/8,122.99 = 3,081.72/x
  3. Step 3: Cross multiply
    5,419.76x = 8,122.99 × 3,081.72
  4. Step 4: Simplify right side
    5,419.76x = 25,032,780.74
  5. Step 5: Solve for x
    x = 25,032,780.74/5,419.76
  6. Step 6: Final answer
    x = 4,618.80

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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.