Home / 2,719.26-4,078.88-1,420.42

Finding the Fourth Proportional to 2,719.26, 4,078.88 and 1,420.42

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Solution

The fourth proportional to 2,719.26, 4,078.88 and 1,420.42 is: 2,130.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.26 : 4,078.88 = 1,420.42 : x
  2. Step 2: Convert to fraction form
    2,719.26/4,078.88 = 1,420.42/x
  3. Step 3: Cross multiply
    2,719.26x = 4,078.88 × 1,420.42
  4. Step 4: Simplify right side
    2,719.26x = 5,793,722.73
  5. Step 5: Solve for x
    x = 5,793,722.73/2,719.26
  6. Step 6: Final answer
    x = 2,130.62

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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.