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Finding the Fourth Proportional to 5,879.76, 8,820.90 and 1,719.44

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Solution

The fourth proportional to 5,879.76, 8,820.90 and 1,719.44 is: 2,579.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,879.76 : 8,820.90 = 1,719.44 : x
  2. Step 2: Convert to fraction form
    5,879.76/8,820.90 = 1,719.44/x
  3. Step 3: Cross multiply
    5,879.76x = 8,820.90 × 1,719.44
  4. Step 4: Simplify right side
    5,879.76x = 15,167,046.89
  5. Step 5: Solve for x
    x = 15,167,046.89/5,879.76
  6. Step 6: Final answer
    x = 2,579.54

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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.