Home / 8,719.78-13,079.38-3,789.42

Finding the Fourth Proportional to 8,719.78, 13,079.38 and 3,789.42

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Solution

The fourth proportional to 8,719.78, 13,079.38 and 3,789.42 is: 5,684.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.78 : 13,079.38 = 3,789.42 : x
  2. Step 2: Convert to fraction form
    8,719.78/13,079.38 = 3,789.42/x
  3. Step 3: Cross multiply
    8,719.78x = 13,079.38 × 3,789.42
  4. Step 4: Simplify right side
    8,719.78x = 49,563,329.96
  5. Step 5: Solve for x
    x = 49,563,329.96/8,719.78
  6. Step 6: Final answer
    x = 5,684.01

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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.