Home / 2,716.12-4,077.42-1,420.12

Finding the Fourth Proportional to 2,716.12, 4,077.42 and 1,420.12

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Solution

The fourth proportional to 2,716.12, 4,077.42 and 1,420.12 is: 2,131.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,716.12 : 4,077.42 = 1,420.12 : x
  2. Step 2: Convert to fraction form
    2,716.12/4,077.42 = 1,420.12/x
  3. Step 3: Cross multiply
    2,716.12x = 4,077.42 × 1,420.12
  4. Step 4: Simplify right side
    2,716.12x = 5,790,425.69
  5. Step 5: Solve for x
    x = 5,790,425.69/2,716.12
  6. Step 6: Final answer
    x = 2,131.87

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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.