Home / 2,651.19-3,977.42-1,872.71

Finding the Fourth Proportional to 2,651.19, 3,977.42 and 1,872.71

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Solution

The fourth proportional to 2,651.19, 3,977.42 and 1,872.71 is: 2,809.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.19 : 3,977.42 = 1,872.71 : x
  2. Step 2: Convert to fraction form
    2,651.19/3,977.42 = 1,872.71/x
  3. Step 3: Cross multiply
    2,651.19x = 3,977.42 × 1,872.71
  4. Step 4: Simplify right side
    2,651.19x = 7,448,554.21
  5. Step 5: Solve for x
    x = 7,448,554.21/2,651.19
  6. Step 6: Final answer
    x = 2,809.51

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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.