Home / 2,551.21-3,519.79-1,431.99

Finding the Fourth Proportional to 2,551.21, 3,519.79 and 1,431.99

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Solution

The fourth proportional to 2,551.21, 3,519.79 and 1,431.99 is: 1,975.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,551.21 : 3,519.79 = 1,431.99 : x
  2. Step 2: Convert to fraction form
    2,551.21/3,519.79 = 1,431.99/x
  3. Step 3: Cross multiply
    2,551.21x = 3,519.79 × 1,431.99
  4. Step 4: Simplify right side
    2,551.21x = 5,040,300.50
  5. Step 5: Solve for x
    x = 5,040,300.50/2,551.21
  6. Step 6: Final answer
    x = 1,975.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.